Question

A circular lid has a diameter of 12 inches.

What is the exact area of the lid?

A.
6π square inches

B.
12π square inches

C.
24π square inches

D.
36π square inches

Answer 1

D= diameter
R=½D
R=½*12
R=6


formula = π*r²
=π•6²
=36π

Answer 2

if, for the problem, the lid is 2D, then the area is (pi)(r)^2. So, 12//2=6; 6^2=36; 36(pi). FINAL ANSWER: D