Question

What is the exact area of a circle with a diameter of m?

A.
m²

B.
m²

C.
m²

D.
m²

Answer 1

area of a circle = (pi)(r^2)
A=(pi)(m^2)
i don't know why all your multiple choice answers are m^2, but my answer is correct.

Answer 2

oops sorry i thought you meant radius was m. in this case, radius=diameter/2. so
r=m/2. so
A=(pi)(radius^2)
A=(pi)(m/2)^2
A=(pi)(m^2/4)
A=[(pi)(m^2)]/4