Question

please. answer it it's urgent.

Answer 1

Given the area of the circle is 25pi.

But, we know that the formula of the area of a circle is given by:

A = r^2 * pi

We will substitute:

==> A = r^2 * pi = 25*pi

We will divide by pi.

==> r^2 = 25

==> r= 5

Then, the radius of the circle is r= 5.

Now we will calculate the circumference.

We know that:

C = 2*r*pi  

==> C = 2* 5 * pi  = 10pi = 31.42 ( approx.)

Then, the circumference of the circle is 10pi = 31.42 units ( approx.)