Answer:
A = 25π ft² or A = 78.5398 ft²
Explanation:
The formula for area of a circle is
A = πr² where r is the radius
We are given a diameter of 10, the radius is half of the diameter, so for our problem r = 5. Plug that in and evaluate
A = π(5²)
A = 25π
or
A = 78.5398 if you multiply out pi