Question

x is the radius of the circle if the diameter is decreased by two units then write the perimeter of circle in the form of x ​

Answer 1

`C = \pi (2x -2)`

Explanation:

The perimeter of a circle is the circumference of the circle. To find it, use the formula
`C = \pi d`.

The diameter here is two times the radius x, d = 2x. But here it has been decreased by 2 so it becomes d = 2x - 2.

Substitute into the formula.

`C = \pi (2x -2)`