A new sidewalk will be 4 ft wide, 280 ft long, and filled to a depth of 9 inches (0.75 ft) with concrete. How many cubic yards of concrete are needed?

Respuesta :

Limosa

Answer:

Volume of the pit is [tex]31.11[/tex] cubic yards.

Step-by-step explanation:

First lets change all the values to yards.

1 yard = 3 foot

Width in yards   = [tex]\frac{4}{3}[/tex] yards

Length in yards = [tex]\frac{280}{3}[/tex] yards

Depth in yards  = [tex]\frac{0.75}{3}[/tex] yards


Volume of the pit = Length * Width * Depth

=[tex]\frac{4}{3} *\frac{280}{3} *\frac{0.75}{3}[/tex]

=[tex]\frac{4*280*0.75}{3*3*3}[/tex]

=[tex]\frac{840}{27}[/tex]

=[tex]31.11[/tex] cubic yards.

Volume of the pit is [tex]31.11[/tex] cubic yards.