Question

A right circular cylinder has a height of ​ 19 3/4 ​ ft and a diameter ​ 1 2/5 ​ times its height.

Answer 1

$v= \pi r^{2} h=* 0.7^{2}*19.75= 30.40276 (30.4)$

Answer 2

Height of cylinder = $19\frac{3}{4} =19.75$ft

Diameter of cylinder = $1\frac{2}{5}$times its height = $1.4 * 19.75=27.65$ft

Now Radius = half of diameter = $\frac{27.65}{2} =13.825$ft

Now we have to find the Volume of cylinder

formula for Volume of cylinder is

Volume of cylinder = $\pi r^2 h$

let's plug the values

Volume of cylinder = $(3.14)*(13.825)^2 *(19.75)$

Plug the values in calculator

= 11852.9657 cubic feet

Round off the answer to two decimal places(i.e. hundredth)

= 11852.97 cubic feet