A rose garden is formed by joining a rectangle and a semicircle, as shown below. The rectangle is 25 feet long and 18 feet wide. If the owner of the garden is going to lay fertilizer over the entire garden at a depth of 6 inches, how many cubic feet of fertilizer will the garden need?
+129852 No pic shown...but...I'm assuming that the semi-circle lies along the garden's width
Area of recangle = 25 x 18 = 450 ft^2
Area of semi-circle with radius = [ (1/2) * 18 ] = 9 ft
(1/2) pi * (9)^2 = (81/2)pi = 40.5 pi ft^2
6 inches = .5 ft
Total cubic feet = [450 + 40.5pi] * .5 ≈ 288.62 ft^3
