Hello!
We must use a certain formula to find the area of a circle. The formula is:
A = pi * r^2
Since we already have the radius (21 cm) and we know what pi is (approximately 3.14), use the formula to solve:
A = 3.14 × 21^2
A = 3.14 × 441
A = 1,384.74
ANSWER:
The area of the circle is 1,384.74 centimetres squared.
