Final answer:
The area of a circle with a radius of 20 inches is 400π square inches, which is approximately 1256.64 square inches.
Step-by-step explanation:
The formula for finding the area of a circle is A = πr², where A is the area and r is the radius of the circle.
Given that the radius of the circle is 20 inches, we can substitute this value into the formula to find the area.
So, the area of the circle with a radius of 20 inches is A = π(20 inches)² = 400π square inches, which is approximately 1256.64 square inches.