Question

What is the exact area of a circle with a diameter of 37 inches

Answer 1

\[radius = \frac{diameter}{2}.\]\[Area=\pi r^2\]
r=radius &
\[\pi = 3.14 \space or \space \frac{22}{7}.\]

Answer 2

area=pie*r^2

r = 37/2 = 18.5 inches
Sub for r in the equation above.