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

Solution

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

$\begin{gathered} 3ft=1yd \\ \\ 27ft^3=1yd^3 \\ \\ 1ft^3=\frac{1}{27}yd^3 \\ \\ 168ft^3=168\times\frac{1}{27}yd^3 \\ \\ 168ft^3=\frac{56}{9}yd^3 \\ \\ 168ft^3=6.2222yd^3 \end{gathered}$

The answer to four decimal places is

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