A = \pi r^2 is your formula for finding the area of a circle.
Part A.
The given diameter was 14, meaning the radius (r) is 7. (14/2).
You then plug 7 into the formula.
A = \pi 7^2
A = 153.938…
Part B.
The diameter of the circle was 14 and because the circle reached the edge of the square, we will assume each side of the square is 14.
Formula for a square is
s^2.
plug 14 in— 14^2
A= 196.