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Volume of a Cylinder

cylinder is f...

Question

A cylinder is formed by rolling a rectangular sheet along its length as shown below. What is the radius of the cylinder?

A

cm

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B

cm

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C

5 cm

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D

Can't be detrmined

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Solution

The correct option is A
cm

Length of the rectangle will be the circumference of circular base of a cylinder. Thus, using that we can find the radius of cylinder.
$2 π r = 10 c m$
$\Rightarrow$ r = $\frac{5}{π}$ cm

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