Question

A cylindrical garbage can has a radius of 2.8ft and holds 86.21 cubic feet of trash. whats the height?

Answer 1

Answer:

Correct choice is A

Step-by-step explanation:

The volume of the cylinder can be calculated using formula

$V=\pi r^2 h,$

where r is the base circle radius  and h is the height of the cylinder.

In your case, $V=86.21\ ft^3,\ \ \ r=2.8\ ft,$

then

$86.21=\pi\cdot (2.8)^2\cdot h,\\ \\h=\dfrac{86.21}{7.84\pi}\approx \dfrac{86.21}{7.84\cdot 3.14}\approx 3.5\ ft.$