Question

find the volume of cylinder where height is 30cm and circumference of base is 132cm

Answer 1

given 
        H = 30 cm
        circumference of base 2πR = 132 cm
         so 
        R = 21cm
volume of cylinder = πR²H
                                (22/7)21²x30 = 41580 cm³

Answer 2

Height of cylinder=30cm

Circumference of base=132cm

$2 \pi r=132$

Taking $\pi$ as 3.14

2*3.14*r=132

r=21.01 (approx.)

Volume of cylinder=$\pi r^{2} h$
                              =3.14*441.4201*30
                              =41581.77(approx.)

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