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

(A) 2 units 

(B) π units 

(C) 4 units 

(D)7 units

Answer 1

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. 

Hence, the correct answer is A.