Chapter 11, Problem 4RP

To determine

To calculate:Thetotal cost of paving the rectangular driveway ABCD .

Answer to Problem 4RP

The total cost of paving the rectangular driveway is $\$1200$ .

Explanation of Solution

Given information:

In a rectangular driveway,

Side AD = 20,

Side AB = 4.

Cost per square meter = $\$15$

Formula used:

Area of rectangle: $A=l\times w$

l = length of rectangle

w= width of rectangle

Calculation:

  

  $\begin{array}{l}A(\square ABCD)=AD\times AB\\ A(\square ABCD)=20\times 4\\ A(\square ABCD)=80m^2\end{array}$

Total cost is equal to a driveway times amount per square meter.

Cost per square meter = $\$15$

Total cost = $A(\square ABCD)\times$ Amount per square meter

Total cost = $80\times 15$

Total cost = $\$1200$