Question

One piece of leftover plywood is 0.75 in. thick, 3 ft. wide, and 7 ft. long. Estimate

the approximate surface area of two stacks of 11-piece leftover plywood. Round your

answer to the nearest hundredth.

Answer 1

The approximate surface area of two stacks is 111.5 square ft.

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.
`0.75* 11=8.25\ in`

Convert inches into ft,

1 inch =
`(1)/(12)` ft

8.25 inch =
`(8.25)/(12)=0.6875` ft

The surface area is
`SA=2(lw+wh+lh)`

`SA=2(7* 3+3* 0.6875+7* 0.6875)`

`SA=2(21+2.0625+4.8125)`

`SA=2(27.875)`

`SA=55.75`

The surface area of two stacks is
`SA=55.75* 2=111.5`

Therefore, the approximate surface area of two stacks is 111.5 square ft.