Question

What is the area of circle if the circumference of circle is 4 π

Answer 1

Hey mate!!!!!


We know that

Circumference = 2πr

Given circumference is 4π

=> 2πr = 4π
cancelling π we have

2r = 4
r = 4/2
r = 2

Now we know that r is 2
so area =
$\pi {r}^{2}$
=
$\pi {2}^{2} \\ = 4\pi$
Area is same as circumference that is 4π


Hope it helps dear friend ☺️✌️✌️

Answer 2

circumference of circle =2πr
2πr=4π
r=4π/2π=2
area of circle=πr²=π(2)²=4π