Curved surface area of a cylinder is 110 cm2. If the height of cylinder is 5 cm, then what will be the diameter of its base?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 7 cm.
| Understanding/Application |
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Let radius of cylinder = r cm and height = h = 5 cm Curved surface area of cylinder = 2πrh = 110 |
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2πrh = 110 2 × 22 × r × 5/7 = 110 r = 7/2 r = 3.5 cm Diameter = 2r = 3(3.5) = 7 cm |