Question

A bucket in the shape of a frustum with the top and bottom circle area is $120m^2$ and $280m^2$. The height of the bucket is $15$ m. Find its volume.

• A. $1916m^3$
• B. $2916m^3$
• C. $3916m^3$
• D. $4916m^3$

Answer 1

Answer: (B)

$2916m^3$

Volume of frustum cone = $\frac{h}{3}[A_1+A_2+\sqrt{A_1{A}_2}]$

$=\frac{15}{3}[120+280+\sqrt{120\times 280}]$

$=5[400+183.30]$

$=2916m^3$