Question

What does the diameter in meters need to be of a round parachute that the designer has determined needs to have an area of 500 square meters?

Answer 1

Area of a circle is
A= pi r^2
so
500m^2 = 3.14 r2
500/pi = r ^2
152.1549...=r^2
square root both sides
r=12.61566...
d=2r
d=25.2
to 3 sig fig