| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
The dimensions of this cylinder are height (h) = 7 and radius (r) = 1. What is the surface area?
| 180π | |
| 60π | |
| 56π | |
| 16π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(12) + 2π(1 x 7)
sa = 2π(1) + 2π(7)
sa = (2 x 1)π + (2 x 7)π
sa = 2π + 14π
sa = 16π
The dimensions of this cube are height (h) = 6, length (l) = 3, and width (w) = 6. What is the surface area?
| 58 | |
| 82 | |
| 144 | |
| 230 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 3 x 6) + (2 x 6 x 6) + (2 x 3 x 6)
sa = (36) + (72) + (36)
sa = 144
The dimensions of this cylinder are height (h) = 4 and radius (r) = 7. What is the volume?
| 4π | |
| 196π | |
| 225π | |
| 512π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(72 x 4)
v = 196π
The dimensions of this cube are height (h) = 9, length (l) = 3, and width (w) = 8. What is the volume?
| 6 | |
| 42 | |
| 224 | |
| 216 |
The volume of a cube is height x length x width:
v = h x l x w
v = 9 x 3 x 8
v = 216
The dimensions of this cylinder are height (h) = 7 and radius (r) = 1. What is the surface area?
| 180π | |
| 60π | |
| 56π | |
| 16π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(12) + 2π(1 x 7)
sa = 2π(1) + 2π(7)
sa = (2 x 1)π + (2 x 7)π
sa = 2π + 14π
sa = 16π