The capacity of a cylindrical bucket is $12.32$ L and its radius is $14$ cm. Its height is (use…
The capacity of a cylindrical bucket is $12.32$ L and its radius is $14$ cm. Its height is (use $\pi=\dfrac{22}{7}$):
$10$ cm
$20$ cm
$25$ cm
$30$ cm
Solution
$12.32$ L $= 12320 \text{ cm}^{3}$. $\pi r^{2} h = 12320 \Rightarrow \dfrac{22}{7} \times 196 \times h = 12320 \Rightarrow 616 h = 12320 \Rightarrow h = 20$ cm.