Question

Pllllllzzzz Helpppppp!!!. I have class in an hour!!

Marcus is putting a border of mulch around a tree. The figure shows the top veiw of the mulch. The mulch is 3 in deep. Find the Volume of the mulch. (last problem shown in image.

Answer 1

The volume of the mulch is
`528\ in^(3)`

Explanation:

we know that

The volume of the mulch is equal to

`V=Bh`

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

`B=24^(2)-20^(2) = 176\ in^(2)`

we have

`h=3\ in` -----> the deep of the mulch

substitute the values

`V=(176)(3)=528\ in^(3)`