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If the curved surface area of a right circular cylinder of height 12 cm is 96 π cm², then its radius is:
Question

If the curved surface area of a right circular cylinder of height 12 cm is 96 π cm², then its radius is:

A.

8 cm

B.

4 cm

C.

3 cm

D.

6 cm

Correct option is B

Given:
Curved Surface Area (CSA) = 96π cm²
Height (h) = 12 cm
Formula Used:
CSA of Cylinder = 2πrh
Solution:
2πrh = 96π
2 × r × 12 = 96
24r = 96
=> r = 9624=4\frac {96}{ 24} = 4 cm​
Therefore, the radius of the cylinder is 4 cm.

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