Question

Tick the correct answer in the following and justify your choice: If the perimeter and the area of a circle are numerically equal, then the radius of the circle is:

पर्याय

• 2 units

• π units

• 4 units

• 2π units

• 7 units

Answer 1

2 units

Let the radius of the circle be r.

Circumference of circle = 2πr

Area of circle = πr²

Given that, the circumference of the circle and the area of the circle are equal.

This implies 2πr = πr²

2 = r

Therefore, the radius of the circle is 2 units.