Question

Answer all questions thanks

Answer 1

a)
`40\pi ft^3`

b)125.68ft³

Explanation:

The formula for volume of a cylinder is

`V=\pi *r^2*h`

Given in the question

Diameter=4ft and height =10ft

You know radius is half the diameter,

radius, r=4/2= 2ft

Finding the volume in terms of pi

`V=\pi *r^2*h\\\\V=\pi *2*2*10\\\\\\V=40\pi ft^3`

Substitute pi with its value,

pi=3.142

Find volume

`V=\pi *r^2*h\\\\\\V=3.142*2*2*10\\\\V=125.68ft^3`