Answer:
1385.622 cm^2
Step-by-step 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
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
