how do i find the area of trapezoids and triangles

106,453 results
  1. Mathematics

    Which shapes could this pentagon be decomposed into to find its area? Choose all that Apply. A) Three Triangles * B) Two Trapezoids C) Five Triangles ** D) One triangle and One Trapezoid *** (My answers are A,C and D).

  2. geometry

    The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest whole number. The smaaler trapezoid is 24m, and the larger trapezoid is 57m. Possible answers: 576m^2--3,249m^2--3,181m^2--14m^2

  3. hi calculus asap

    the graph of a piecewise linear function f, for -1

  4. TRIANGLE HELP!!!! (MATH!)

    The two triangles above are similar. a. Find x using the ratio of the sides 12 cm and 16 cm: x/20 = 12/16 Show your work. b. Find x using the ratio of the sides 6 cm and 8 cm. Show your work. c. Explain why the answers to (a) and (b) should be the same.

  5. Math Help Please!!!!!!

    Which figures will always be similar to each other? two rectangles, two trapezoids, two equilateral triangles, or two hexagons.

  6. Math

    The sides of two similar trapezoids are in a ratio of 1:3. The area of the smaller trapezoid is 12 inches squared. Find the area of the larger trapezoid

  7. Math

    Let V be the volume of a pyramid of height 15 whose base is a square of side 5. Part a). Use similar triangles to find the area of the horizontal cross section at a height y. Part b). Calculate V by integrating the crosss-sectional area.

  8. Calc 2

    Compute the total area of the (infinitely many) triangles in the Figure In the image, the height of all the triangles is 6/7. The x-values for the bases of the triangles from left to right are as follows: 27/64 , 9/16 , 3/4 , 1 Using the formula for the

  9. math

    Two similar triangles have the scale factor of 3:7. Find the ratio of their corresponding perimeters and area

  10. math

    The ladders shown below are standing against the wall at the same angle. How high up the wall does the longer ladder go? (All measurements are in feet.) ladders 11.25 ft 12.5 ft 14 ft 14 ft 2. The pair of polygons is similar. Find the value of x. polygons

  11. math

    which figures will always be similar to each other? A.two rectangles B.two trapezoids C.two equilateral triangles D.two hexagrams

  12. Math

    If two trapezoids have the same area, do they always have the same perimeter? Explain your thinking with words and diagrams.

  13. math

    Which of the following statements is true? A. all trapezoids are similar B.all isosceles triangles are the same C.all rectangles are similar D.all equilateral triangles are similar

  14. math

    1. Read the following statements: I. All trapezoids consist of two parallel sides. II. The base angles of all trapezoids are equal in measure. III. The lengths of the tall trapezoids legs are equal in measure. Which of the above statements are true? II

  15. geometry

    There are two noncongruent triangles that have a 9-inch side, a 10-inch side, and that enclose 36 square inches of area. Find the length of the third side in each of these triangles.

  16. Math

    The hypotenuse of,c of right triangle ABC is 7.0 m long. A trigonometric ratio for angle A is given for four different triangles. Which one of these triangles has the greatest area? Justify your decision. a)sec A=1.7105 b)cos A=0.7512 c) csc A=2.2703 d)sin

  17. math

    An equilateral triangle with a base of 20 cm and a height of 17.3 cm is divided into 4 smaller equilateral triangles. What is true about this figure? A. The total perimeter of all 4 triangles is 70 cm. B. The total area of all 4 small triangles is the same

  18. Math

    Find the area of a regular pentagon if its apothem is approximately 4 ft long and each of its sides are 5.8 ft long. So I tried dividing the pentagon into triangles...but then I came up with the answer 24.41? I know that's not right. Can you hLep me at

  19. Geometry

    Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles. ​4 m, 5.1 m, 12.5 m A. unique triangle******* B. many different triangles C. no triangles Please check my work! (I'm realllly bad at

  20. Math

    The picture shows an orange parallelogram split into 8 equal parts and a green parallelogram split into 8 equal parts. Drag figures so that the total area is equal to the number given. (The answer is 3 triangles and 2 trapezoids!!)

  21. math

    32: The trapezoids are similar. The area of the smaller trapezoid is 711 m². Find the area of the larger trapezoid to the nearest whole number. The one trapezoid has a base of 27 m and the larger one has a base of 39 m. 39: Find the circumference. Leave

  22. Math

    Triangle ABC has coordinates A(-4,-2), B(0,-2), and C(-4,1). Triangle DEF has coordinates D(3,6), E(3,2), and F(0,2). Use coordinate geometry to determine if these two triangles are congruent. If they are not congruent, state the reason. A: The triangles

  23. calculus

    The base of a solid is a circle of radius = 4 Find the exact volume of this solid if the cross sections perpendicular to a given axis are equilateral right triangles. The equation of the circle is: x^2 + y^2 = 16 I have the area of the triangle (1/2bh) to

  24. Math Question

    Which one of the following pairs of triangle must be similar? a) two isosceles triangles with congruent vertex angles b) two right triangles c) two scalene triangles with congruent bases d) two obtuse triangles a) if the two vertex angles are the same then

  25. geometry

    The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest whole number. The picture of the small one has a number 42m and the larger one has a number 57m. Can someone please help me my

  26. math

    The area ratio between 2 similar triangles is 225/81. Find the perimeter ratio of these triangles. a) 3/2 b) 225/81 c) 15/9

  27. Math

    Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles. ​​20.2 in., 11 in., 8.2 in. A. unique triangle B. many different triangles C. no triangles Hey ya'll! I'm posting another question

  28. Math

    Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles. ​​ ​12 ft, 7 ft, 14 ft A. unique triangle B. many different triangles C. no triangles Hey! Can you guys help me out with this? I

  29. Geometry

    The trapezoids are similar. The area of the smaller trapezoid is 244m2 find the area of the larger trapezoid to the nearest whole number.

  30. math need help now

    which 2 figures will always be similar 2 each other? A.2 rectangles B. 2 trapezoids C.2 equilateral triangles D.2 hexagons

  31. Geometry

    Two similar triangles have perimeters of 60 and 36 inches. Find the area of the smaller triangle if the corresponding area of the larger triangle is 100 sq. inches. a. 90 sq. in. b. 48 sq. in. c. 36 sq. in. d. 60 sq. in.

  32. physics

    Given that the side of the square has a length b-a, find the area of one of the four triangles and the area of the small inner square. Give the area of one of the triangles followed by the area of the small inner square separated by a comma. Express your

  33. math

    If two trapezoids have the same perimeter do they have the same area?

  34. geometry

    find the surface area of a right prism with the given features: The bases are trapezoids with bases of lengths 6 and 10 perpendicular to one side of the length 12 ; height = 12 Round the answer to the nearest square unit

  35. Math

    Which figures will always be similar to each other? A. Two rectangles* B. Two trapezoids C. Two equilateral triangles D. Two hexagons

  36. Geometry

    Which figures will always be similar to each other? 1. Two rectangles 2. Two hexagons 3. Two trapezoids 4. Two equalitarel triangles*** I think its D

  37. calculus

    The base of a solid is a circle of radius = 4 Find the exact volume of this solid if the cross sections perpendicular to a given axis are equilateral right triangles. I have the area of the triangle (1/2bh) to be equal to 2sqrt(12) (1/2 * 4 * sqrt12) I

  38. Math

    An equilateral triangle s divided into 4 congruent equilateral triangles. What method can be used to find the area of the larger equilaterl triangle give the area of one of the smaller triangles? F. Multiply the area of the larger equilateral triangle by 4

  39. Math

    Find the surface area of the right prism with the given features. The bases are right trapezoids with bases of lengths 8 and 14 perpendicular to one side of length 18; height = 11.

  40. math problem HELP ME

    Andre drew four congruent triangles, with legs a and b units long and hypotenuse c units long. Then, Andre arranged the triangles to form a large square. He then wrote two different expressions for the are of the large square. Since each side measures c,

  41. Math

    One of two similar triangles has an area of 1/4 times that of the other. What is the ratio of its perimeter of the triangles? (I know the answer but I don't know the solution, please explain. Thank you very much!!)

  42. Geometry

    I have four questions: 1. The area of trapezoid ABCD is 60. One base is 4 units longer than the other, and the height of the trapezoid is 5. Find the length of the median of the trapezoid. 2. In trapezoid ABCD, line BC is parallel to line AD, angle ABD =

  43. Geometry

    A cereal company is redesigning its cereal boxes to make them stand out on the supermarket shelves. For some unknown reason, they went with a triangular prism for the shape of their box. The front and back are isosceles triangles with base 10 inches and

  44. geometry

    There are two noncongruent triangles that have a 9-inch side, a 10-inch side, and that enclose 36 square inches of area. Find the length of the third side in each of these triangles.

  45. math geometry project

    Design a dance floor with a mosaic pattern. • Classify triangles, use congruent triangles in real-life situations, find the areas of triangles and quadrilaterals. Investigation: You work for a construction company. One of your clients wants the company

  46. Math

    I have 2 similar triangles. The surface area of the smaller one is 27m squared. The scale factor is 3. How do I find the surface area of the larger triangle

  47. math

    how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not

  48. Algebra

    Which lengths represent the side lengths of a right​ triangle? Use pencil and graph paper. Draw each triangle to verify your answer. Triangle​ 1: 12​, 9​, 21 Triangle​ 2: 9​, 12, 15 Triangle​ 3: 15​, 36 ​, 39. Answer Choices: A. Triangle

  49. Math

    Find the missing value for the following triangles: Base: Height: Area: 27in. 54in.^2 4cm 64cm^2

  50. Physics

    When Using A Graph To Solve A Problem About How Far A Car Traveled During Specified Time During Which It Was Accelerating, How Many Area Calculations Do You Have To Make? What Is/are The Shape/shapes You Are Calculating? ( I believe the answer is D) A. One

  51. math/formula 1

    how do i find the area of trapezoids and triangles

  52. math

    make triangles and find the area of those triangles and then add em together. I need to find the area of a polygon,breaking into simpler parts. how do you do it?

  53. 8th grade Math

    i need some explanation on Area of Trapezoids and Parallelograms....? can some body explain how to find the area?

  54. math

    mat e. matics starts to construct a series of triangles. all the triangles are drawn such that the sum of the base and height are always 10cm. determine the maximum area of all these triangles.

  55. Math (Geometry)

    Hello everybody, I have been presented with a geometry task. Here is the exact description of the task. "You work for a construction company. One of the clients wants the company to build a 16 food by 20 dance floor. They want the floor to be a moaic

  56. math

    drawing several kinds of triangles including a right triangle, than draw a square on each of the sides of the triangles. compute the area of the squares and use this information to investigate whether the pythagorean theorem works for only the right

  57. math

    hi my name is Hannah and I need help with my math homework it is something to do with multiplying trapezoids and triangles? Also, what are the formula for the shapes so that way i would be able to do my homework? THANKS FOR THE HELP!!!!!!

  58. Math

    I have a triangle with equal sides. Then a s cons triangle is put in the middle so I have four triangles. Triangles are continued to be put instead so I have more and more triangles. As more triangles are added in the same space, the size of them are

  59. Math

    I am to find the area of a square. It is cut in half and the line is measured at 6 square root 2. It also says that the two triangles are equallateral triangles. I know that the equation for a equalateral triangle is A = the square root of 3 times s

  60. math

    a square has a area of 60sq cm.what%is the area of one of the triangles formed by drawing both of the diagonals of the square of the area of the remaining triangles?

  61. Calculus

    For a class project, I have been asked to find the volume of the area bounded by two functions, with cross sections of equilateral triangles. The two functions in question are y = xsinx y = -xsinx , And I need to find the volume that would result if the

  62. math

    A tangram is a geometric puzzle made from seven pieces that form a square. Trace the pieces, cut them out, and answer the following questions. The puzzle can also be seen on wikipedia web site. a. If the area of the entire square equals 1 unit, label each

  63. geometry help needed.

    I have a rectangle here with triangles inside. some triangles are blank others are shaded. -The area of the rectangle ABCD is 40in^2. What is the area of the unshaded region?

  64. Math

    If trapezoids have the same area, would they always have the same perimeter?

  65. Math

    The following regular hexagon A ____________B / \ / \ / \ F\ /C \ / E\____________/D has two diagonals going through it, FD and CE. These two lines form 3 triangles. We know that the area of the hexagon is 1. What is the area of those 3 triangles?

  66. Math Word Problem

    Andre drew four congruent triangles, with legs a and b units long and hypotenuse c units long. Then, Andre arranged the triangles to form a large square. He then wrote two different expressions for the are of the large square. Since each side measures c,

  67. Math

    Andre drew four congruent triangles, with legs a and b units long and hypotenuse c units long. Then, Andre arranged the triangles to form a large square. He then wrote two different expressions for the are of the large square. Since each side measures c,

  68. math

    If you have a trapezoid that is divided into two triangles to find the area would you find the area of each triangle then add the two areas together?

  69. math

    write the expression that can be used to find the area of a polygon made of triangles with an area of n square units each

  70. Trig

    Can someone check my answers? Find # of triangles possible:

  71. math

    The two trapezoids shown are similar. If the area of the larger trapezoid is 96 square centimeters, what is the area of the smaller trapezoid?

  72. Math

    In a 2 by 3 grid, each lattice point is one unit from it's nearest neighbours. A total of 14 isosceles triangles (but not right triangles), each with an area of 1/2u squared have only two vertices that are one unit appart in the grid. how many such half -

  73. geometry

    Why did you wait until the night before the exam to realize you did not understand the material? At this point, if you are confused on all that material, all I can recommend is get a good night's sleep. okay so my geometry final is TOMORROW! and i honestly

  74. geometry

    There are two noncongruent triangles that have a 9-inch side, a 10-inch side, and that enclose 36 square inches of area. Find the length of the third side in each of these triangles.

  75. Math

    The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD. I'm so confused... please help! I was thinking that if I

  76. Math

    Bernice made a kite by putting 2 triangles together the base of each triangles is 9 inches The height of each triangles is 12 inches and the height of the other triangle is 16 inches What is the area of the kite?show your work.!!!

  77. Math

    In this 2x3 grid, each lattice point is one unit away from its nearest neighbors. A total of 14 isosceles triangles(but not right triangles), each with an area of ½u squared have only two vertices that are one unit apart in the grid. how many such

  78. Calculus

    Estimate the area of the plane region bounded by the graph of f(x) = e^x, the x-axis, and the vertical lines x = 0 and x = 8 using the trapezoidal method with trapezoids of equal width. Round your answer to 4 decimal places. I got the answer 6892.7480 but

  79. geometry

    f equilateral triangle JKL is cut by three lines as shown above to form four equilateral triangles of equal area, what is the length of a side of one of the smaller triangles?

  80. math

    In the triangles, we have XY = 2AX = 2YB and AZ/ZC = 2/3. Find the ratio of the area of triangle YBC to the area of triangle ZYC.

  81. Geometry

    Find the area of the triangles in square centimeters: a. 3.5, 4.8, 6.1 b. 10.2, 4.4, 7.1

  82. Math

    How do I figure out the height of a triangle? The height of a triangle is defined as the perpendicular distance from an angle to a side. Now, since this is a right triangle, and depending on how it is situated, the height could be 10" or 12" if you observe

  83. math

    how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not

  84. Math, algebra

    in a two by 3 grid, each lattice point is one unit from its nearest neighbours. a total of 14 isosceles triangles( but not right triangles), each with an area of 1\2 u2 have only two vertices that are one unit apart in the grid. how many such half unit

  85. mathematics

    In this 2-by-3 grid, each lattice point is one unit from its nearest neighbors. A total of 14 isosceles triangles (but not right triangles), each with an area of 1/2u^2 have only two vertices that are one unit apart in the grid. How many such half-unit

  86. Mathematics

    3. Use the diagram of a REGULAR HEXAGON and follow these steps to solve for the area of a hexagon with sides equal to 4 cm. Leave radicals in your answers. How many equilateral triangles are there? __________ If we cut an equilateral down the middle (green

  87. Math

    if two trapezoids have the same area, do they have the same area?

  88. Math

    The first pattern of triangles it uses 4 matches ( 3 matches for build a triangle and 1 matches for connected to other triangles). a)Find the number of triangles if there are 100 matches? b) write the formulas

  89. Geometry

    tha area of a regular octagon found by decomposing the octagon into a rectangle into trapezoids is ________ m2

  90. Geometry

    A rectangular city block measures 105 by 88 meters.The city council wants to divide the block into two triangles of equal area. What is the length of the hypotenuse of each triangular area?( I already found the area of the whole rectangle and the area of

  91. Geometry

    Does the angle-side relationship in triangles correspond with specific triangles or does it apply in all triangles?

  92. Geometry

    Two Right Triangles have equal acute angles, yet one triangle is larger than the other. Therefore, the triangles much be _________________. I've looked everywhere in my books and on the internet and I cant find it.

  93. Calculus

    I am in a car and travel for 12 minutes. Below are the speeds in mph, recorded every two minutes. Use trapezoids, right-bound rectangles, and midpoint rectangles to estimate the distance I traveled. Min 0 2 4 6 8 10 12 Speed 20 22 35 46 50 50 20

  94. algebra

    Jeff made some designs using equilateral triangles, as shown bellow. He noticed that as he added new triangles, there was a relationship between the number of triangles, and the outer perimeter of the design. If the pattern is continued, what would be the

  95. math

    Triangles C and D are congruent. If the area of the rectangle is 20 square units, what is the area of the triangle C?

  96. maths

    Rudransh has a piece of cardboard in shape of a quadrilateral. He cuts it into two triangles such that angles formed at the vertices are bisected. He wants to find out whether the two triangles are congruent or not

  97. calculus

    There are an infinite number of triangles that must be isosceles and have two legs that measure 10 cm, each of them has an area. what is the biggest area such a triangle could have?

  98. Calculus

    Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. The diagonal

  99. maths-urgent

    Rudransh has a piece of cardboard in shape of a quadrilateral. He cuts it into two triangles such that angles formed at the vertices are bisected. He wants to find out whether the two triangles are congruent or not without actually super positioning them

  100. precalculus HELP!

    I posted this question before: What is the area enclosed by the graph of the absolute value(3x)+ the absolute value(4y)=12 I tried solving for y and got: y=4-x when I graphed this, I got a linear equation graph...I am wondering if I am supposed to find the

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