The radius of a circle is 20 m. Find its area in terms of piπ.
The area of a circle can be found with the formula A = πr², where A is the area and r is the radius.
Given that the radius of the circle is 20 m, we can substitute this value into the formula:
A = π(20²)
A = π(400)
A = 400π
Therefore, the area of the circle is 400π square meters.