Question

If the curved surface area of a right circular cylinder of height 12 cm is 96 m cm?, then its radius is:

• A. 5
• B. 4
• C. 3
• D. 6

Answer 1

Answer:

B. 4

Given:
$\text{Curved Surface Area of cylinder} = 96\pi \text{ cm}^2$
$\text{Height} = 12 \text{ cm}$

Formula:
$\text{CSA} = 2\pi rh$

Substitute values:
$2\pi r \cdot 12 = 96\pi$

$24\pi r = 96\pi$

Cancel $\pi$:
$24r = 96$

$r = 4 \text{ cm}$

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Final Answer: $4 \text{ cm}$