Chapter 12.8, Problem 26STP

To determine

To find : Area of cardboard is needed to make a rectangular box.

Answer to Problem 26STP

Option (C)

Explanation of Solution

Given information :

The given information is, a rectangular box of cereal that measures $10$ in. by $8$ in. by $2$ in is to be made using cardboard.

Formula Used:

Surface Area Rectangular box, S.A. = $2(lb+bh+lh)$

Calculation :

  

Amount of cardboard needed

  $\begin{array}{l}=2(10\times 8+8\times 2+2\times 10)\\ =2(80+16+20)\\ =2\times 116=232\text{ sq}\text{.in}\text{.}\end{array}$

  $232$ sq.in. cardboard needed to make rectangular box, Option (C).