ANSWER:
72 square inches
0.5 square feet
STEP-BY-STEP EXPLANATION:
We can calculate the necessary material to calculate the surface area of the box, like this:
[tex]A=2\cdot(l\cdot h+l\cdot w+h\cdot w)[/tex]l = 6
w = 3
h = 2
replacing:
[tex]\begin{gathered} A=2\cdot(6\cdot2+6\cdot3+2\cdot3) \\ A=2\cdot(12+18+6) \\ A=2\cdot36 \\ A=72in^2 \end{gathered}[/tex]72 square inches of sheet-metal required
We can calculate the value in square feet, we must know the factor between both units.
1 square foot equals 144 square inches. Therefore:
[tex]\begin{gathered} A=72in^2\cdot\frac{1ft^2}{144in^2} \\ A=0.5ft^2 \end{gathered}[/tex]0.5 square feet of sheet-metal required
