Question

The question is below

Answer 1

So we know the area of a circle is πr^2, which means:

π * r^2.

π = pi

r = radius

So we know the values of π and r, so we can plug them in:

π * r^2

3.142 * 21^2

3.142 * 441 = 1385.622

Therefore, the area of the circle is 1385.622

Answer 2

1385.622 cm^2

Explanation:

The area of a circle is given by the formula

A = pi * r^2

We know the radius is 21 and pi is approximated by 3.142

A = 3.142 * 21^2

A = 3.142 *441

1385.622 cm^2