Question

The image below is a triangle drawn inside a circle with center O:

Answer 1

Which of the following expressions shows the area, in square inches, of the circle?

(π = 3.14)
3 ⋅ 3.14 ⋅ 22
3.14 ⋅ 32
3.14 ⋅ 22
3.14 ⋅ 3

Answer 2

area of a circle
\[A=\pi r^2 = \pi d^2/4\]
where r is radius and d is diameter

Answer 3

I know but there is a triangle in the center