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THe sides of a rectangle with dimension 7 cm × 11 cm are joined to form a cylinder with height 11 cm. What is the volume of this cylinder?
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- 85.75 cm³
- 86.92 cm³
- 54.25 cm³
- 42.875 cm³
- 85.75 cm³
Correct Option: D
According to the question, 2πr = 7
| ⇒ 2 × | × r = 7 | |
| 7 |
| ⇒ r = | cm. | |
| 2 × 22 |
∴ Volume of Cylinder = πr²h
| = | × | × 11 | ||
| 7 | 2 × 22 × 2 × 22 |
| = | = 42.875 cu.cm. | |
| 8 |
