The volume of a cylinder

Question:

The volume of a cylinder whose radius r is equal to its height is

(a) 1/4 πr3 

(b) πr3/32

(c) πr3 

(d) πr3/8

Solution:

The correct answer is option (c) πr3

Explanation:

The volume of cylinder = πr2 h

Given that r = h

Then, the volume of cylinder = πr2 (r)

V = πr3

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