1. What is the formula for finding the surface area of a rectangular prism?
a) SA = 2lw + 2lh + 2wh
b) SA = l + w + h
c) SA = lwh
d) SA = 3lw + 5h
2. Calculate the surface area of a cube with side length of 5 cm.
a) 125 cm^2
b) 150 cm^2
c) 100 cm^2
d) 175 cm^2
3. The surface area of a cylinder is 100π cm^2 and the radius is 4 cm. What is the height of the cylinder?
a) 5 cm
b) 8 cm
c) 10 cm
d) 12 cm
4. The surface area of a sphere is 314.16 cm^2. What is the radius of the sphere?
a) 4 cm
b) 3 cm
c) 2 cm
d) 5 cm
5. What is the surface area of a triangular prism with base area of 20 cm^2, height of 6 cm, and length of 10 cm?
a) 200 cm^2
b) 220 cm^2
c) 250 cm^2
d) 180 cm^2
6. Calculate the lateral surface area of a cone with radius of 3 cm and slant height of 5 cm.
a) 15π cm^2
b) 30π cm^2
c) 20π cm^2
d) 25π cm^2
7. True or False: The surface area of a rectangular prism is equal to the sum of the areas of its six faces.
8. True or False: The surface area of a cube is equal to 6 times the length of its sides squared.
Answer Key:
1. a) SA = 2lw + 2lh + 2wh
2. a) 125 cm^2
3. c) 10 cm
4. a) 4 cm
5. a) 200 cm^2
6. b) 30π cm^2
7. True
8. True
surface area unit test
1 answer