Pls check my answers for the math test:
1. Find the area of a parallelogram with base b and height h.
b = 87 cm
h = 18.6 cm (1 point)
105.6 cm2*
211.2 cm2
809.1 cm2
1,618.2 cm2
2. Find the area of the triangle.
A triangle has a base of 21 yards and a perpendicular height of 8.2 yards. (1 point)
33.62 yd2
86.1 yd2
344.4 yd2
172.2 yd2*
3. Find the area of the trapezoid.
A trapezoid is shown. The lower base measures 19.5 centimeters and the upper base measures 14.5 centimeters. A dashed line segment that measures 8 centimeters connects the 2 bases at or near their midpoints. (1 point)
68 cm2
136 cm2
214 cm2*
268 cm2
4. The radius of a circular hat is 3.7 inches. Find the circumference. Use 3.14 for π. (1 point)
1.85 in.
11.618 in*
23.236 in.
22.2 in.
5. Use 3.14 for π to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary.
A circle is shown. A dashed line extends across the circle through a point at the center connecting points on opposite sides of the circle. This dashed line segment is labeled 28.2 meters. (1 point)
44.27 m2
177.1 m2
624.26 m2
2,497.05 m2*
6. Find the length of the side of a square with an area of 144 inches squared. (1 point)
48 in
12 in*
206 in
288 in
7. Find the volume of the cylinder to the nearest cubic unit. Use 3.14 for pi.
A cylinder is shown with a height of 3 inches and a radius of the upper base of 4 inches. (1 point)
48 in.3
113 in.3*
144 in.3
151 in.3
8. The figure below shows two semicircles at each end of a rectangle with the dimensions shown.
The rectangle has a length of 10 inches and a width of 3 inches. Each semicircle has a diameter of 3 inches. The width of the rectangle and the diameter of the semicircle share the same side.
Which is closest to the area of the figure in square inches? (1 point)
37
34
30*
39
9. Name the geometric solid suggested by a beach ball. (1 point)
sphere
rectangular prism...
pyramid
cylinder
10. A soup company packages its soup in cans shaped like right circular cylinders. A diagram for the net of the cylinder is shown.
A diagram is shown with a central bright green horizontally oriented rectangle of height 5 inches at the center. At the upper left, touching the rectangle is a lighter green circle with radius drawn and labeled 1.5 inches. An identical circle is drawn at the lower right, touching the side of the rectangle.
Which is closest to the surface area of the cylinder? (1 point)
38 square inches
61 square inches
113 square inches*
160 square inches
11. Use a net to find the surface area of the prism.
A rectangular prism is shown with a length of 14 inches, width of 5 inches, and height of 7 inches. (1 point)
203 in.2
406 in.2
476 in.2*
540 in.2
12. Paul has a paperweight shaped like the square pyramid shown.
A triangular prism is shown. The length of a side of the square base is 4 centimeters and the height of a triangular face is 6 centimeters.
What is the total surface area of Paul's paperweight in square centimeters? (1 point)
24
48*
56
64
13. Find the surface area of the cylinder to the nearest tenth of a square unit. Use 3.14 for π.
The circular face of a cylinder has a radius of 3 centimeters. The height of the cylinder is 18.2 centimeters. (1 point)
228 cm2
399.4 cm2
165.7 cm2*
371.1 cm2
14. Find the volume of a triangular prism with the following dimensions. Round to the nearest whole number.
triangle base: 7 ft
triangle height: 4 ft
prism height: 8.5 ft (1 point)
20 ft3*
65 ft3
119 ft3
238 ft3
your not the real oobleck @oobleck
Look the first two are just wildly wrong
1. base * height of parallelogram = 87*18.6 = 1618.2 NOT 105.6
2. (1/2) base * altitude = (1/2)(21 * 8.2) = 86.1 NOT 172.2
Please seriously try to do the problems, not guess.
Thx for your help, but I jus found out it was the wrong test. 2nd would be 107.1 (^-^)
Looks like
#1. You found the semi-perimeter, not the area
#2. You did not multiply by 1/2
#3. wrong again A = (b1 + b2)/2 * h
#4 wrong again C = 2πr
#5. wrong again A = πr^2 (not πd^2)
#6. OK - finally!
#7. wrong again V = πr^2 h
#8. wrong again
#9. really? Just review the choices given
#10. wrong again
#11. wrong again
#12. wrong again
#13. wrong again A = 2πr(r+h)
#14. wrong again V = 1/3 Bh
Clearly, you are just guessing, and have not studied the various geometric shapes and their properties.