The width of a rectangle is 4 feet shorter than its length. The area of the rectangle is 42 ft.². Find the length and width. Rou nd your answer to the nearest 10th of a foot.
1 answer:
Answer:
Length ≈ 20 feet (rounded down nearest 10th feet)
Width ≈ 20 feet (rounded up to nearest 10th feet)
Step-by-step explanation:
Find Length and Width
Width = Length - 4 feet
Area = 42 ft²
Area = L x W
42 = L x (L - 4)
42 = 2L - 4
42 + 4 = 2L - 4 + 4
2L = 46
2L/2 = 46/2
L = 23
L ≈ 20 feet
Width = 23 - 4
Width = 19 feet
Width ≈ 20 feet
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