Question

The perimeter of the shape is 25.71 cm

Calculate the value of the radius

Take π to be 3.142

Answer 1

The radius of the circle is: 4.09 cm

Explanation:

Assuming the shape to be a circle.

The perimeter of a circle is called circumference and is given by the formula.

`C = 2\pi r`

For the time being, we know

`\pi = 3.142\\C = 25.71cm`

Putting the values in the formula we get: as x is the radius

`25.71 = 2 * 3.142 * x\\25.71 = 6.284x\\x = (25.71)/(6.284)\\x = 4.09\ cm`

Hence,

The radius of the circle is: 4.09 cm