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16 November, 11:47

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

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Answers (2)
  1. 16 November, 12:08
    0
    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.
  2. 16 November, 12:12
    0
    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
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