Question

Volume of a cylinder when $d=7cm$ and $h=3cm$

• A. $118c{m}^3$
• B. $115.5c{m}^3$
• C. $155.5c{m}^3$
• D. $808.5c{m}^3$

Answer 1

The correct option is B $115.5c{m}^3$

Given,

Diameter d=7cm , Height h=3cm

therefore, radius $r=\frac{d}{2}=\frac{7}{2}=3.5cm$

Volume of cylinder=$\pi r^{2}h=\frac{22}{7}\times 3.5\times 3.5\times 3=115.5c{m}^3$