Question

Jeffrey is buying mulch for a circular flower garden with a diameter of 12 feet. The layer of mulch needs to be 4 inches thick. What is the volume of mulch needed for the flower garden?

Answer 1

ok so it looks like a cylinder
we can do it in square feet or inches
V=hpir^2




for feet
4in=1/3ft
V=hpir^2
d/2=r
12/2=6=r
V=(1/3)(pi)(6^2(
aprox pi=3.141592
V=37.6991 ft^3


if in inches
12ft=144 inches
144/2=72 inches

V=(4)(3.141592)(72^2)
V=65144.1 in^3


37.6991 ft^3 or 65144.1 in^3

Answer 2

Answer: 37.7 ft^3

Just doing math on a sheet of paper helps!