Question

We want to cover the bed with a layer of mulch 3 inches thick. How many cubic feet of mulch will we need?

Answer 1

To find how many cubic feet we need to find the volume of the flower bed. The volume is given by:

`V=Bh`

where B is the area of the base and h is the height.

In this case the height would be 3 inches (0.25 ft) and the area of the base is:

`B=(1)/(2)\cdot6\cdot6=18`

Therefore the volume is:

`V=18\cdot0.25=4.5`

Hence we need 4.5 cubic feet of mulch