One piece of leftover plywood is 0.75 inches thick, 3 feet wide, and 7 feet long estimate the approximate surface area of two stacks of 11 pieces of leftover plywood. Round your answer to the nearest hundred

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

Step-by-step explanation:

We were Given : One piece of leftover plywood is 0.75 in. thick, 3 ft. wide, and 7 ft. long.

We are to Estimate the approximate surface area of two stacks of 11-piece leftover plywood?

Solution:

length = 7 ft.

The width = 3 ft.

The height = 0.75 in.

We have 11-piece leftover plywood.

i. e. 0.75*11=8.25in

Convert inches into ft,

1 inch = 1/12ft

8.25 inch = 8.25/12 = 0.6875 ft

The surface area formula is

SA=2 (lw+wh+lh)

Substitute the values above:

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

SA=2 (21+2.065+4.8125)

SA=2 (27.875)

SA=55.75

Recall:The surface area of two stacks = 55.75*2=111.5

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

111.6ft^2 for the two stacks

Step-by-step explanation:

0.75inch * 11 = 8.25 inches

8.25 inches = 0.69ft

Here dimensions are 3 ft. Wide, and 7 ft. Long and height of stack = 0.69ft

Surface area of one stack =

2 * (LW+WH+LH)

= 2 * (7*3 + 3*0.69+7*0.69)

= 55.8 ft^2

Multiply by 2 to to get surface area of 2 stacks separately

55.8 * 2 = 111.6ft^2