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19 September, 21:08

You are updating your garage and the only thing left to paint is your garage door. You

are only going to paint the side that faces the street. The garage door is 10 feet 8 inches

tall and 145 inches wide. You need to know the surface area of the side of the garage

door to determine how much paint to buy. The hardware store sells paint by how much

covers a square foot. What is the surface area you should report to the hardware store?

(Hint: 1 square foot = 144 inches).

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Answers (1)
  1. 20 September, 00:38
    0
    129 square foot

    Step-by-step explanation:

    Step 1: Convert height of the door to inches

    Height of the door = 10 feet 8 inches

    1 feet = 12 inches

    10 feet = y inches

    Cross Multiply

    y = 120 inches

    Height of door in inches = 120 + 8 = 128 inches

    Step 2: Find the surface area of one side of the door

    Surface area = length x width

    length = 128 inches

    width = 145 inches

    Surface area = 128 x 145

    Surface area = 18560 inches

    Step 3: Convert surface area from inches to square foot

    Surface area = 18560 inches

    1 square foot = 144 inches

    y = 18560 inches

    Cross multiply

    144y = 18560

    y = 18560/144

    y = 128.89 rounded off to 129 square foot.

    Therefore, you should report 129 square foot surface area to the hardware store.

    !
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