Question

The cylinder below has a volume of 2,512cm and a height of 8cm. What is the diameter of the cylinder?

Answer 1

`Diameter=2*r= 2*10=20 cm`

Explanation:

Volume of the cylinder=
`2512cm^3`

Height(h) of the cylinder=8 cm

Diameter= 2*radius

Radius(r)=?

Volume of a cylinder=
`\pi *r^2*h`

As,
`\pi =(22)/(7) =3.14`

Putting the values in the formula:

`2512=3.14*r^2*8\\\\2512=25.12*r^2`

Dividing by '25.12' both side:

`r^2=2512/25.12\\\\r^2=100\\\\r=10`

`Diameter=2*r= 2*10=20 cm`