Answer:
The volume of the mulch is [tex]528\ in^{3}[/tex]
Step-by-step explanation:
we know that
The volume of the mulch is equal to
[tex]V=Bh[/tex]
where
B is the area of the border of the mulch
h is the deep of the mulch
Find the area of the border B
The area of the border B is equal to the area of the complete square minus the area of the inside square
so
[tex]B=24^{2}-20^{2} = 176\ in^{2}[/tex]
we have
[tex]h=3\ in[/tex] -----> the deep of the mulch
substitute the values
[tex]V=(176)(3)=528\ in^{3}[/tex]
