Question

A ramp is being constructed with wood

and then filled with concrete. How many
cubic feet of concrete will be needed to
complete the ramp?

Answer 1

Answer:
`V=360ft^3`

Explanation:

The missing figure is attached.

You can calculate the volume of the concrete that will be needed to complete the ramp with the folllowing formula:

`V=Bh`

Where "B" is the area of the base and "h" is the heigth.

The base is a triangle, then its area can be found with this formula:

`B=(ba)/(2)`

Where "b" is the base and "a" is the heigth.

IN this case:

`b=12ft\\a=10ft`

Then:

`B=(12ft*10ft)/(2)\\\\B=60ft^2`

Since:

`h=6ft`

You get that the volume is:

`V=(60 ft^2)(6ft)\\\\V=360ft^3`