Respuesta :

irspow
You have two rectangular sides with a total area of:

A=2(10*15)=300 ft^2

You have two triangular sides with a total area of:

A=2(8*12)/2=96 ft^2

And you have a rectangular base with an area of:

A=15*12=180 ft^2

So the total surface area is:

A=300+96+180=576 ft^2