If the curved surface area of a right circular cylinder of height 12 cm is 96 π cm2 , then its radius is:
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Correct answer: D
Explanation
The correct answer is option 4 i.e. 4 cm.
CSA = 2πrh
Given:
CSA = 96π cm²
Height (h) = 12 cm
Use the formula:
2πr × 12 = 96π
⇒ 24πr = 96π
⇒ r = 96π ÷ 24π = 4 cm