Question 254296
The area of a circle has formula:
{{{A = pi*r^2}}}
However if we are given the diameter, we must find radius by dividing by 2.
D = 7 ft
r = 3.5 ft.
22/7 makes more sense here.
{{{A = (22/7)*(7/2)^2}}}
{{{A = (22/7)*(7/2)*(7/2)}}
{{{A = (11)*(7/2)}}}
{{{A = (77/2)}}}
or 38.5 square feet.