Question

A hospital needs a circular landing pad for their helicopter. The landing pad should be 5000 square feet. The contractor calculated that the pad would need to be about 40 feet across

Answer 1

area = pi x r^2

5000 = 3.14 x r^2

r^2=5000/3.14 = 1592.356

r = sqrt(1592.356) = 39.9 round to 40

diameter = 40*2 = 80

the pad needs to be 80 feet across