# the diagonals of an isosceles trapezoid are each 17,the altitude is 8,and the upper base is 9.Find the perimrter of the trapezoid.

14,605 results
1. ## calculus

the cross section of a 5-ft long trough is an isosceles trapezoid with a 2 foot lower base, a 3-foot upper base, and an altitude of 2 feet. water is running into the trough at a rate of 1 cubic foot per minute. how fast is the water level rising when the

2. ## geometry

Isosceles trapezoid ABCD has legs AB and CD and base BC If AB = 7y – 4, BC = 4y – 6, and CD = 8y – 18, find the value of y.

3. ## Geometry-PSSA Practice

Which of the following quadrilaterals must have diagonals that bisect each other? Rectangle Parallelogram Rhombus Isosceles Trapezoid

4. ## Math

the diagonals of an isosceles trapezoid are each 17,the altitude is 8,and the upper base is 9.Find the perimrter of the trapezoid.

5. ## MATH

In an isosceles trapezoid the length of a diagonal is 25 cm and the length of an altitude is 15 cm. Find the area of the trapezoid.

6. ## geometry

the diagram below shoes a pennant in the shape of an isosceles triangle. the equal sides each measure 13, the altitude is x+7 and the base is 2x.

7. ## Geometry Question (multiple choice)!

The isosceles trapezoid is part of an isosceles triangle with a 34° vertex angle. What is the measure of an acute base angle of the trapezoid? Of an obtuse angle? 73°; 107° 34°; 146° 73°; 146° 34°; 107° Thank you =) :) ;)

8. ## geometry

Find the perimeter of an isosceles trapezoid with base lengths of 10 and 18 and height of 8.

9. ## 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.

10. ## Maths

Isosceles triangle $ABE$ of area 100 square inches is cut by $\overline{CD}$ into an isosceles trapezoid and a smaller isosceles triangle. The area of the trapezoid is 75 square inches. If the altitude of triangle $ABE$ from $A$ is 20 inches, what is the

11. ## geometry

An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.

12. ## AP Calculus

The sum of the two bases and the altitude of a trapezoid is 16ft. a) Define the area A of the trapezoid as function of its altitude. b) Find the altitude for which the trapezoid has the largest possible are. (Optimization)

13. ## Calculus

a solid has as its base the region bounded by the curves y = -2x^2 +2 and y = -x^2 +1. Find the volume of the solid if every cross section of a plane perpendicular to the x-axis is a trapezoid with lower base in the xy-plane, upper base equal to 1/2 the

14. ## geometry

6. The isosceles trapezoid is part of an isosceles triangle with a 34° vertex angle. What is the measure of an acute base angle of the trapezoid? Of an obtuse base angle? The diagram is not drawn to scale. (1 point)73o; 107o 34o; 146o 73o; 146o 34o; 107o

15. ## fd

a trapezoid abcd has parallel sides ab and dc of lengths 8 and 22. If both diagonals AC and BD are of length 17, what is the area of the trapezoid

16. ## easy geometry

1)If diagonals of a rhombus are 10 cm and 24 cm. find the area and perimeter of the rhombus. 2)A regular hexagon with a perimeter of 24 units is inscribed in a circle. Find the radius of the circle. 3)Find the altitude,perimeter and area of an isosceles

17. ## geometry isosceles

Find the altitude, perimeter and area of an isosceles trapezoid whose sides have lengths 10 cm, 20 cm , 10 cm, and 30 cm. how??

18. ## Math

The area of a trapezoid is 720 cm square. The height is 10 cm. The two bases of the trapezoid are parallel. Find the length of each base, if one base is 3 times as long as the other.

19. ## geometry

Given Isosceles trapezoid ABCD. AB = 3x - 4 and CD = x + 12. Find AB. Isosceles trapezoid A B C D is drawn. 2 8 16 20

20. ## geometry

Find the perimeter of an isosceles trapezoid with base lengths of 10 and 18 and height of 8.

21. ## Math

ABCD is an isosceles trapezoid with AB as its longest side and O divides the diagonals AC and BD in the ratio of 1:2. What is the area of ABCD if the area of BOC is 2 square meter?

22. ## Math

Given a trapezoid ABCD with AD parallel to BC. The diagonals AC and BD are congruent. Prove that ABCD is an isosceles trapezoid.

23. ## geometry

In an isosceles trapezoid, the longest base is 11", a leg is 5", and the height is 4". Find the length of the shorter base of the trapezoid.

24. ## Math

Given a trapezoid ABCD with AD parallel to BC. The diagonals AC and BD are congruent. Prove that ABCD is an isosceles trapezoid.

25. ## Math

Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m and the area is 224m2, what is the length of the other base? The area of a trapezoid is: A= (1/2) h (b1 + b2) ...where h = height and b1, b2 are the bases.

26. ## calculus

a trapezoid is a quadrilateral with (only) two sides (called bases) that are parallel. an isosceles trapezoid has two equal legs. the area of a trapezoid is A=(1/2)*h*(b1+b2) where b1 and b2 are the two parallel bases and h is the altitude. your problem: a

27. ## geometry

Which description does NOT guarantee that a trapezoid is isosceles? A. congruent bases B. congruent legs C. both pairs of base angles congruent D. congruent diagonals

28. ## Math

The area of trapezoid is h( b1+b2)/5, where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the lenghth, in inches, of its

29. ## Geometry

The measure of the consecutive sides of an isosceles trapezoid are in the ratio 8:5:2:5 the perimeter of the trapezoid is 140 inches if it's height is 20 inches find the area of the trapezoid

30. ## math

an altitude of triangle is 5/3rd of the length of its corresponding base if their altitude be increased by 4cm and the base is decreased by 2cm, the area of the triangles remain the same. find the base and altitude of triangle ?????

The base of a right prism is isosceles trapezoid with legs c=d = 5 cm, bases a=8 cm and b=14 cm, and altitude of the trapezoid k=4 cm. The height of the prism h=10 cm. Find: Lateral area

A circle with radius 3 is inscribed in a isosceles trapezoid with legs of 10. Find the length of the smaller base. When I draw a diagram, calling the trapezoid ABCD with A and D at the bottom, I see that the length from where the altitude from B and C hits

33. ## geometry

The equal sides of an isosceles trapezoid each measure 5, and its altitude measures 4. If the area of the trapezoid is 48, find the lengths of its bases.

34. ## geometry

A trapezoid has a lower base which is twice as long as its parallel upper base. The upper base is 21 cm long. One non-parallel side is 20 cm long and the other non-parallel side is 6 cm longer than the shorter non-parallel side. What is the perimeter of

35. ## math

Algebra For questions 1-5, find the value of the variable. 1. x = (1 point) 2. y = (1 point) 3. x = (1 point) 4. x = (1 point) 5. (1 point) x = , y = , b = 90 x = , y = 3, b = 95 x = , y = 2, b = 90 x = , y = , b = 130 In Exercises 6-8, decide whether the

36. ## geometry

Find the length of the altitude to the base of an isosceles triangle if the length of one leg is 17 and the base is 16.

37. ## Math

In a diagram of an 2 isosceles triangles, where ABC is a big triangle and a ADE, is just inside the top portion of ABC. Isosceles triangle ABC is similar to a isosceles triangle ADE what is the length of DE, which is the base part of a isosceles triangle

38. ## geometry

Find the length of the diagonals of the isosceles trapezoid if AC = x + 1 and DB = 2x - 3

39. ## GEOMETRY

the trapezoid has equal nonparallel sides the upper base is 6. the lower base is 16. and the diagonal is 12. what is the attitude of the trapezoid?

40. ## Geometry

Find the area of the isosceles trapezoid with lower base 18cm, legs 6cm and base angles 30 degrees

41. ## geometry

how long are the congruent legs of isosceles triangle if its base and altitude to the base are 12cm and 8 cm respectively?

42. ## math

Find the altitude of an isosceles triangle whose base is 8 cm and whose legs are 5 cm?

43. ## trig

Find the altitude of an isosceles triangle whose base in 30 cm vertex angle is 75 degres

Find altitude of isosceles triangle if angle=53 degrees and base is 8 inches.

45. ## math

a rectangle with side of 6 cm and 5 cm has the same area as an isosceles triangle with base length 12 cm find the altitude to the base of the triangle and the sides of the triangle

46. ## math

Rose’s garden is in the shape of a trapezoid. If the height of the trapezoid is 16 m, one base is 20 m, and the area is 224 m2, find the length of the other base. How do I set up this problem so I can solve it? Thank you!

47. ## geometry

The trapezoid in Exam Figure 6 has equal nonparallel sides. The upper base is 6, the lower base is 16, and the diagonal is 12. What is the altitude of the trapezoid? Round your answer to one decimal place.

48. ## Math

one base of a trapezoid is 10 ft. long, the altitude is 4 ft., and the area is 32 sq. ft. find the length of a line parallel to and 1 ft. above the 10-ft. base and included between the legs of the trapezoid.

49. ## Geometry

Are the diagonals of a parallelogram perpendicular? Why or why not? Explain. 4. Does an isosceles trapezoid have two sets of parallel sides? Why or why not? Explain. 5. Does a rhombus have two sets of congruent sides? Why or why not? Explain. Answer: 3.

50. ## Geometry

1. What is the base and the height of the rectangle if the area is 216 and the perimeter is 66? 2.The perimeter of an isosceles trapezoid is 40 ft. Thr bases of the trapezoid are 11ft and 19 ft. Find the area of the trapezoid.

51. ## Math could you help this is kinda hard and urgent

The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid. I tried figuring this out... by the way i got median times height is 40 and also notice that we are talking about the diagonals not

52. ## Calculus

SOS...help!!! please email me at 969e221 at g mail. com here is the question: Find the trapezoid of largest area that can be inscribed in the upper half of the ellipse x2/9 + y2/4 = 1 where the lower base of the trapezoid is on the x-axis and is 6 units

53. ## Math

isosceles trapezoid with a perimeter of 52 meters; one base is 10 meters greater than the other base; the measure of each leg is 3 less than twice the base of the shorter base

54. ## geometry

An isosceles trapezoid has bases of 4 and 10. If the base angle is 45°, find the area.

55. ## Algebra

One base of trapezoid AGIE is four less than three times the other shorter base. The height of the trapezoid is one half of the shorter base. The area of the trapezoid is 210 square inches. Find the lengths of the bases and the height.

56. ## Geometry

The base of a right prism is a rhombus with a side of 10 cm and an altitude of 9.6 cm. Find the diagonals of the prism if the altitude of the prism is 12 cm.

The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid. I don't get it... i got as far as the area is 40, and m (median) times the height is 40 as well... please help!

58. ## drbob222,math , algebra

Sorry i made a typo it suppost to read 20m for one base not 12. Directions: Crafts. Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 12m, and the area is 224m ^2, find the length of the other base. Area= 1/2

59. ## Euclidean Geometry

I am in the 10th Grade and my question is: The base of an isosceles triangle is 21cm. long. The altitude to the base is 9cm. long. What is the approx. measure of a base angle of the triangle? The tangent of that angle is 9/10.5 = 0.8571 Trigonometric

60. ## Geometry

I need help... Did I end up with the correct answer? A trapezoid has equal nonparallel sides, The upper base is 6, the lower base is 16 ( 11,5) and the diagonal is 12. What is the altitude of the trapezoid? Round your answer to the one decimal place. I was

61. ## math

the high of a trapezoid is 10ft the upper base is 6ft shorter then the lower base if the area of the trapezoid is 50 square ft how long is the upper and lower base?

62. ## Plane Geometry

The equal sides of an isosceles trapezoid each measure 5, and its altitude measures 4. If the area of the trapezoid is 48, how do you find the lengths of its bases?

63. ## geometry

I am working on a geometry problem where I have to build a mobile of the quad. family. I have to state the properties of each figure. For a parallelogram I have 1. opp. sides are congruent 2. opp. angles are congruent 3. diagonals bisect each other and are

64. ## geometry.

In the diagram, a trapezoid is shown with x=36 and y=56. Find the area of the trapezoid. It's an isosceles triangle with base angles of 60°.

65. ## geomatry

Given: Isosceles trapezoid CPRQ with base R CXQ Prove: QCX is isosceles it needs to be a two column proof

66. ## Geometry

"Given quadrilateral ABCD with A(0,0) B(4,2) C(3,3) and D(1,2), prove that ABCD is a non-isosceles trapezoid" I don't understand how to put this as a proof, since I have to include formulas and reasons. Wouldn't a non-isosceles trapezoid be a normal

67. ## Calculus

A horizontal trough is 40 cm long and its ends are in the form of an isosceles trapezoids with an altitude of 20 cm, a lower base of 20 cm and an upper base of 3 cm. Water is being poured into the trough at the rate of 5 cm/sec. How fast is the water level

68. ## Math

Are the diagonals of a parallelogram perpendicular? Why or why not? Explain. Does an isosceles trapezoid have two sets of parallel sides? Why or why not? Explain. Does a rhombus have two sets of congruent sides? Why or why not? Explain. Answer: Yes,

69. ## Geometry

a trapezoid has one base 20, a secind base 15, and an area of 60. what is the altitude of the trapezoid?

70. ## Geometry

Isosceles triangle ABE of area 100 square inches is cut by CD into an isosceles trapezoid and a smaller isosceles triangle. The area of the trapezoid is 75 square inches. If the altitude of triangle ABE from A is 20 inches, what is the number of inches in

71. ## Math Urgent

1. A hexagonal prism 6ft tall with a regular base measuring 9ft on each and an apothegm of length 7.8ft. 2. A prism 2m tall. The base is trapezoid whose parallel sides measure 7m and 3m. The other sides are each 4m. The altitude of the trapezoid measures

72. ## geometry

how long are the congruent legs of isosceles triangle if its base and altitude to the base are 12cm and 8 cm respectively?

73. ## geometry

how long are the congruent legs of isosceles triangle if its base and altitude to the base are 12cm and 8 cm respectively?

74. ## Geometry

The diagonals of an isosceles trapezoid divided it into one pair of congruent triangles and one pair of similar triangles.

75. ## Geometry

The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid.

76. ## geometry

the longer base of an isosceles trapezoid is 14 feet. the nonparallel sides are each 10 feet long and the length of diagonal is 16 feet. find the measure of a base angle

77. ## geometry

the bases of isosceles trapeziod abcd are 17 and 25cm and its base angles are 45 degrees. find the height of the trapezoid

78. ## math

isosceles trapezoid with a perimeter of 52 yards the measure of one base is 10 yards greater than the other base the measure of each leg is 3 yards less than twice the length of the shorter base

79. ## math

Find the altitude of an isosceles triangle whose base is 8 cm and whose legs are 5 cm?

80. ## Intro to Algebra

The cost for paint to cover the exterior of the four sides of a shed was $40. A can of paint costs$10 and will cover 33 square feet. The shed consists of four sides, each shaped like a trapezoid. They each have one base of 5 feet and one base of 6 feet.

81. ## Math

The bases of a trapezoid are 24 and 33 inches long and it encloses an area of 571. Without determining the height of the trapezoid find the areas of the triangular regions into which the diagonals divide the quadrilateral?

82. ## Math, Precalc

Find, to the nearest tenth of a degree, the angle formed by the two main diagonals of a cube that connect consecutive vertices of the lower base to the opposite consecutive vertices of the upper base, as illustrated at right.

83. ## Calculus

A solid has as its base a circular region in the xy plane bounded by the graph of x^2 + y^2 = 4. Find the volume of a solid if every cross section by a plane perpendicular to the x-axis is an isosceles triangle with base on the xy plane and altitude equal

84. ## Calculus (Volumes)

A solid has as its base the region bounded by the curves y = -2x^2 +2 and y = -x^2 +1. Find the volume of the solid if every cross section of a plane perpendicular to the x-axis is a trapezoid with lower base in the xy-plane, upper base equal to 1/2 the

85. ## Math

What is the composite figure? There is this trapezoid that has a triangle on the side. the base of the trapezoid is 17cm and the base of the triangle is 19cm, the height of trapezoid is 22 cm and 10cm on the other side, and the top of the trapezoid is

86. ## Algebra

The lenght of one base of a trapezoid is 19 less than five times the length of the other base. If the trapezoid has a height of 18 feet and an area of 477 ft2, find the length of the longer base

87. ## algebra 2

a trapezoid has one equal base to its height, x, and the other base is twice as long.write the expression for the area of the trapezoid as a common fraction in terms of x.

88. ## Plane Geometry

The equal sides of an isosceles trapezoid each measure 5, and its altitude measures 4. If the area of the trapezoid is 48, find the lengths of its bases.

89. ## geometry

the equal sides of an isosceles trapezoid eah measure 5, and its altitude measures 4. if the area of the trapezoid is 48, find the lengths of its bases.

90. ## algebra1

The area of trapezoid is h( b1+b2)/5, where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 sguare inches , and one base 12 inches long, what is the lenghth, in inches, of its

91. ## math

The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the length, in inches, of its

92. ## math

The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the length, in inches, of its

93. ## algebra 1

The area of trapezoid is h( b1+b2)/5, where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the lenghth, in inches, of its

94. ## Geometry

Are the diagonals of a parallelogram perpendicular? Why or why not? Explain. Does an isosceles trapezoid have two sets of parallel sides? Why or why not? Explain. Does a rhombus have two sets of congruent sides? Why or why not? Explain. Answer: 3. Yes,

95. ## Math

What the base b1 of an Isosceles trapezoid if b2=57ft,h=17ft6inches and both legs are 23ft? or the formula for the solution?thank you.

96. ## geometry

An isosceles trapezoid has base angle 45 degrees and bases of length 12 and 32. Find its area.

97. ## Math

If you solve this you are officially amazing! "The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid."

98. ## Algebra

The cost for paint to cover the exterior of the four sides of a shed was $40. A can of paint costs$10 and will cover 33 square feet. the shed has 4 sides, each shaped like a trapezoid. they each have one base of 5 feet and one base of 6 feet. what is the

99. ## Math

Find altitude of isosceles triangle if è=53 degrees (the equal angles) and the base is 8 inches.

100. ## trig

Find altitude of isosceles triangle if angle=53 degrees (the equal angles) and the base is 8 inches.