Answer:
The approximate surface area of two stacks is 111.5 square ft.
Step-by-step explanation:
Given : One piece of leftover plywood is 0.75 in. thick, 3 ft. wide, and 7 ft. long.
To find : Estimate the approximate surface area of two stacks of 11-piece leftover plywood ?
Solution :
The length is 7 ft.
The width is 3 ft.
The height is 0.75 in.
11-piece leftover plywood.
i.e. [tex]0.75\times 11=8.25\ in[/tex]
Convert inches into ft,
1 inch = [tex]\frac{1}{12}[/tex] ft
8.25 inch = [tex]\frac{8.25}{12}=0.6875[/tex] ft
The surface area is [tex]SA=2(lw+wh+lh)[/tex]
[tex]SA=2(7\times 3+3\times 0.6875+7\times 0.6875)[/tex]
[tex]SA=2(21+2.0625+4.8125)[/tex]
[tex]SA=2(27.875)[/tex]
[tex]SA=55.75[/tex]
The surface area of two stacks is [tex]SA=55.75\times 2=111.5[/tex]
Therefore, the approximate surface area of two stacks is 111.5 square ft.
