Chapter 12.4, Problem 7PSB

a.

To determine

Find the volume of the bed.

Answer to Problem 7PSB

  $23cubicft.$

Explanation of Solution

Given information:

Traci waterbed is $7ft$ long , $5ft$ wide and $8inch$ thick.

  

Calculation:

  $\begin{array}{l}length=7ft\\ width=5ft\\ thichness=8inch=2/3ft\\ volume=l\cdot w\cdot h\\ V=7\times 5\times \frac{2}{3}\\ V=\frac{70}{3}\cong 23cubicft.\end{array}$

Hence, volume is $23cubicft.$

b.

To determine

Find the weight of the water in the bed.

Answer to Problem 7PSB

  $1456Ib$

Explanation of Solution

Given information:

Traci waterbed is $7ft$ long , $5ft$ wide and $8inch$ thick.

If $1cuf$ of water weight is $62.4Ib$ .

Calculation:

  $\begin{array}{l}\frac{1cuft}{62.4Ib}=\frac{23.3cuft}{x}\\ x=23.3\times 62.4\\ x=1456Ib\end{array}$

Hence, the weight of the water in the bed is $1456Ib$ .