Question

Hey guys! Leave the answer in terms of pi :)

Answer 1

A) if the diameter is 13 the radius is 6.5
$(6.5 \times 6.5) \times \pi = 42.25\pi \\ = 132.7323$
b)if the diameter is 6 the radius will be 3
$(3 \times 3) \times \pi = 9\pi \\ = 28.27433$
hope this helps