Question

The volume of a right circular cylinder, whose diameter is $10\text{cm}$ and height $4\text{cm}$, is

• A. $40\pi {\text{cm}}^3$
• B. $20\pi {\text{cm}}^3$
• C. $100\pi {\text{cm}}^3$
• D. $80\pi {\text{cm}}^3$

Answer 1

The correct option is C $100\pi {\text{cm}}^3$

Diameter$D=10\text{cm}$

Radius $R=\frac{10}{2}\text{cm}=5\text{cm}$

Volume of the circular cylinder $V=\pi r^{2}h$

$V=\pi \times 5\times 5\times 4{\text{cm}}^3$

$V=100\pi {\text{cm}}^3$

Option C is the correct answer.