If you visualize the problem, the blades form a circle when viewed on top. The distance between the two adjacent tips is like an arc length of a circle, denoted as S. Its formula is r*theta, where theta is the angle opposite to the arc. Since there are 4 blades and a circle has a total of 360 degrees, theta = 360/4 = 90. We have to convert it to radians first: 90 degrees*(pi/180 degrees) = pi/2
S = r*theta
36 = r*(pi/2)
r = 22.92 ft
Thus, each blade has a length of 22.92 feet.
