Question

A right cylinder has a radius of r inches and height of 2r inches.

Answer 1

4, 2, 6

Explanation:

right on edge

Answer 2

the volume is
`6.28r^(3)`
`in^(3)`

Explanation:

This problem bothers on the mensuration of solid shapes, a cylinder.

Given data

Volume v = ?

Radius r = r in

Height h= 2r in

We are expected to solve for the volume of a cylinder, given the above data we can substitute it in the formula for volume of a cylinder to obtain our result

we know that the expression for the volume of a cylinder is

`v= \pi r^(2) h`

`v= 3.142*r^(2) *2r\\v= 3.142*2r^(3) \\v= 6.28r^(3) in^(3) \\`

Hence the volume in terms of the radius is
`6.28r^(3)in ^(3)`