| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
The dimensions of this cylinder are height (h) = 9 and radius (r) = 6. What is the surface area?
| 126π | |
| 80π | |
| 30π | |
| 180π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(62) + 2π(6 x 9)
sa = 2π(36) + 2π(54)
sa = (2 x 36)π + (2 x 54)π
sa = 72π + 108π
sa = 180π
The dimensions of this cube are height (h) = 2, length (l) = 6, and width (w) = 4. What is the surface area?
| 314 | |
| 64 | |
| 178 | |
| 88 |
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 6 x 4) + (2 x 4 x 2) + (2 x 6 x 2)
sa = (48) + (16) + (24)
sa = 88
The dimensions of this cylinder are height (h) = 4 and radius (r) = 4. What is the volume?
| 288π | |
| 320π | |
| 64π | |
| 108π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(42 x 4)
v = 64π
The dimensions of this cube are height (h) = 1, length (l) = 4, and width (w) = 2. What is the volume?
| 189 | |
| 8 | |
| 70 | |
| 147 |
The volume of a cube is height x length x width:
v = h x l x w
v = 1 x 4 x 2
v = 8
The dimensions of this cylinder are height (h) = 9 and radius (r) = 6. What is the surface area?
| 126π | |
| 80π | |
| 30π | |
| 180π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(62) + 2π(6 x 9)
sa = 2π(36) + 2π(54)
sa = (2 x 36)π + (2 x 54)π
sa = 72π + 108π
sa = 180π