Chapter 12.8, Problem 12IP

To determine

To find : Number of gallons of paint does he need to paint walls of bed room.

Answer to Problem 12IP

  $2.9$ gallons

Explanation of Solution

Given information :

Hinto's bed room walls dimensions $20$ feet long, $15$ feet wide, $8$ feet high, and with ne gallon of paint of paint he covers $400$ sq.feet.

Formula Used:

  $2(lb+bh+hl)$

Calculation :

Wall Area

= $2(20\times 15+15\times 8+8\times 20)$

  $\begin{array}{l}=2(300+120+160)\\ =1160{\text{ft}}^2\end{array}$

One gallon paint cover $400{\text{ft}}^2$ .

Therefore, No. of gallon required = $\frac{1160}{400}=2.9$ gallons