Question

If the circumference of a circle is 396 units, find the diameter of the circle. Use ñ = 22/7

Answer 1

`Diameter=126.12 units`

Explanation:

The circumference of a circle is the length of the boundary of the circle that can be find by using the formula:

Circumference=
`2\pi r`

For, Circumference= 396 units

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

`396=2\pi r`

`396=2*3.14*r\\\\396=6.28*r\\\\r=396/6.28\\\\r=63.06units`

As,

`Diameter=2*radius=2*63.06`

`Diameter=126.12 units`