Question

Find the area of circle with radius 20

Answer 1

area of circle is:

$area = \pi r^{2}$

so therefore:

$area=\pi *20^{2} \\=400\pi \\=1260$

to 3 significant figures

Answer 2

Answer:

Step-by-step explanation:

We know,

Area of a circle =πr^2

Area of a circle=π×(20) ^2

=1256.64units(approx)