Most of these I need to make sure they are right but some I need help.
1. Choose an appropriate metric unit for the mass of a paper clip.
meter
gram***
kilogram
centimeter
2. Which is likely to have a mass close to 2 kilograms?
a grown elephant
a pineapple ***
a 3-year-old child
an acorn
3. Which measure correctly completes the statement?
1,127.5 milligrams = ? grams
112.75 grams
11.275 grams
1.1275 grams***
1,127.5 grams
4. Which measure correctly completes the statement?
321.517 L = ? mL
0.0321517 mL
3,215,170 mL
321,517 mL***
32,151.7 mL
5. A flower was 1.6 meters high one week ago. In 7 days it grew 11 centimeters. Find the current height of the flower.
12.3 m
1.71 m***
125 cm
11.2 cm
6. Find the area of the rectangle with a length of 32 inches and a width of 20 inches. (1 point)52 in. 2
6,400 in. 2
520 in. 2
640 in. 2***
7. Megan wants to build a fence around her pool. The pool is 28 feet long by 23 feet wide. The fence is to be 15 feet from the edge of the pool.
A diagram of the pool is shown. The pool's dimensions are labeled as 28 feet long and 23 feet wide. A fence is drawn around the pool and the distance between the pool and the fence is labeled as 15 feet.
What are the outside dimensions of the area surrounding the pool?
How many feet of fencing will she need?
53 ft by 58 ft; 222 ft
53 ft by 58 ft; 111 ft
222 ft by 58 ft; 53 ft Don't get
38 ft by 43 ft; 162 ft
8. Find the area of the triangle.
A triangle has a bottom edge of 74 feet. A dashed segment has an endpoint at the top vertex and meets the bottom edge at a right angle. The dashed segment measures 17 feet.
Not drawn to scale.
91 ft2
148 ft2
182 ft2
629 ft2 ***
9. Find the area of the parallelogram with a base of 276.5 cm and a height of 20.3 cm. Need help
5,612.95 cm2
11,225.9 cm2
22,451.8 cm2
3,741.96 cm2
10. Find the circumference of the circle. Use 3.14 for pi. Round to the nearest unit.
A circle with diameter labeled 21 centimeters.
24 cm
66 cm ***
125 cm
69 cm
11. The circumference of Mars is about 10,664 km. Find the diameter of Mars to the nearest km.
17.256 km
3,396 km***
333 km
259 km
12. Estimate the area of a circle with a radius of 16 meters. Use Start Fraction 22 over 7 End Fraction for pi.
62 square meters***
531 square meters
805 square meters
1,608 square meters
13. The drawing is composed of a rectangle and a semicircle. Find the area of the figure to the nearest unit.
A figure is composed of a rectangle and a semi-circle. The top edge of the rectangle measures 10 centimeters. The left edge measures 18 centimeters. The right edge of the rectangle is dashed and is also the diameter of the semi-circle.
Not drawn to scale.
599 cm2 Need help
217 cm2
307 cm2
689 cm2
14. Which figure is not a prism?
The figure is a triangle showing the side.
The figure is a triangle showing the side. Can't upload the images but this
the best I could explain
The figure is a rectangle showing the backside and sides coming to the point of a triangle.
3-D rectangle
15. Find the surface area of the rectangular prism with l = 12 m, w = 16 m, and h = 5 m.
1,920 m2
960 m2***
664 m2
66 m2
16. Use the net to find the surface area of the prism.
A triangular prism and its net are shown. The triangular bases have side lengths of 4 m, 6 m, and a hypotenuse of 7.21 m. The height of the prism is 22 m.
268 m2
402.62 m2 Need help
725.32 m2
853 m2
17. Find the volume of the rectangular prism.
A 3 dimensional box with a length of 15 centimeters, a width of 6 centimeters, and a depth of 3 centimeters is shown.
Not drawn to scale.
24 m3
240 m3
270 m3***
280 m3
18. What is the area of the trapezoid?
A trapezoid is shown. The top side of a trapezoid is 7 centimeters; the right side is 7 centimeters; the bottom side is 13 centimeters; the left side is 10 centimeters. The top and bottom sides are parallel. A dashed segment connects the top right vertex to the bottom side at a right angle. The dashed segment measures 6 centimeters.
43 cm2
60 cm2***
70 cm2
120 cm2
19. A quilt design uses parallelogram-shaped pieces that have a base measure of 4 inches and a height of 6 inches. If 15 pieces are used in the quilt, what is the total area of the parallelogram-shaped pieces in the quilt? 225 in.2
360 in.2***
450 in.2
900 in.2
20. Stevie is moving up to the attic and wants to paint a wall white. The wall is a triangle with a base of 17 feet and a height of 12 feet. What is the area of the wall?
204 ft2
58 ft2
102 ft2***
51 ft2
Please help me as fast as you can
they changed the questions a little bit /=
#1-6 ok
#7. Consider that the 15 ft is added on both sides and both ends, increasing the dimensions by 30 ft each way.
#8 ok
#9. Just as a triangle has area 1/2 bh, a parallelogram has area = bh
#10-11 ok
#12 A = pi r^2
#13 again, the area of the semicircle is 1/2 * pi r^2. Add the rectangle to that
#14 hard to say, but a prism will have two parallel bases. The bases may be triangles or rectangles, or any polygon, for that matter.
#15 A = 2(12*16 + 12*5 + 16*5)
#16 each base has an area of 12. Each face is a rectangle of width 22, so the lateral area is 22(4+6+7.21)
#17-20 ok