Problema Solution
Abraham is spreading mulch in a circle on top of an area where he has planted seeds. He has enough mulch to cover an area that is 452.16ft2. How much rubber edging does Abraham need to encircle the mulch that will cover the seeds?
Answer provided by our tutors
let
r = the radius of the circle, r>0
A = 452.16 ft^2 the area
first we will find r and then the perimeter of the circle P = 2 r pi
since A = r^2*pi we have:
r^2 *3.14 = 451.16
by solving we find:
r = 11.99 ft
click here to see the step by step solution of the equation:
P = 2*11.99*3.14
P = 75.30 ft
Abraham needs 75.30 ft of rubber edging to encircle the mulch.