Question

Sami needs to order concrete for a driveway . The driveway will be 14 feet wide , 24 feet long , and 0.5 feet thick How many cubic yards of concrete will Sami need to order ?

Answer 1

We need to find the volume

`Volume=lwh`

From the question, we have

`\begin{gathered} w=14ft \\ l=24ft \\ h=0.5ft \end{gathered}`

Subtituting the value, we have

`\begin{gathered} Volume=lwh \\ \\ Volume=24(14)(0.5) \\ \\ Volume=168ft^3 \end{gathered}`

To round up, we convert to yard

`\begin{gathered} 3ft=1yd \\ \\ 27ft^3=1yd^3 \\ \\ 1ft^3=(1)/(27)yd^3 \\ \\ 168ft^3=168*(1)/(27)yd^3 \\ \\ 168ft^3=(56)/(9)yd^3 \\ \\ 168ft^3=6.2222yd^3 \end{gathered}`

The answer to four decimal places is

`\begin{equation*} 6.2222yd^3 \end{equation*}`