Question

the curved surface area of a right circular cylinder of height 28 cm is 880 cm^2 .find the radius of the base of the cylinder​

Answer 1

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Given,

The curved surface area of cylinder = 880 cm²

Height h of cylinder = 28 cm

We have to find the radius of the cylinder.

Let the radius be x.

CSA of cylinder =

$2\pi rh,\\\\880=2*\frac{22}{7}*r*28,\\\\880=2*22*4*r,\\\\r=\frac{40}{8}\\\\r=5\:cm.$

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