Question

Which circles have an area of16 pi in2?

Choose all answers that are correct.

A.a circle with a radius of 2 in.

B.a circle with a radius of 4 in.

C.a circle with a diameter of 8 in.

D.a circle with a diameter of 16 in.

Answer 1

The correct answer for the question that is being presented above is this one: "B.a circle with a radius of 4 in." circles have an area of16 pi in2 should have a radius of 4 in.

The area of a circle is this:
Area = pi * r^2
16 pi = pi * r^2
r^2 = 16
r = 4.