Question

pleas answer this question​

Answer 1

Step-by-step explanation:

Given:

The perimeter and the area of a circle numerically equal.

To find:-

Radius of the circle

Solution:-

Let the radius of the circle be 'r' units

Perimeter of the circle

=Circumference of the circle(C)=2πr units

Area of the circle (A)=πr² sq.units

According to the given problem,

The perimeter and the area of a circle numerically equal.

=>C=A

=>2πr=πr²

Cancelling 'πr' on both sides

=>2=r

=>r=2 units

Answer:-

The radius of the circle is 2 units

Answer 2

Answer:

$\pi \:r {}^{2} = 2\pi \: r \\ r {}^{2} = 2r \\ r = 2$