Question

The diameter of a cylinder is $0.55$ cm, its length is $1.35$ cm. Its volume is_______${cm}^3$.

• A. $0.3240$
• B. $0.32$
• C. $0.324$
• D. $3.2$

Answer 1

Answer: (B)

$0.32$

Volume $=\pi \frac{d^2}{4}\times \left(l\right)=0.32057{cm}^3$
$\approx 0.32{cm}^3\Rightarrow$ (since it has 2 significant figures).