A rectangular mirror covers an area of 13.95 square feet on a wall. The width of the mirror is 1.4 feet more than its length. Find the length and width of the mirror.

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02-05-2017
Mathematics

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A rectangular mirror covers an area of 13.95 square feet on a wall. The width of the mirror is 1.4 feet more than its length. Find the length and width of the mirror.

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taskmasters taskmasters · Answer 1 · 2017-05-15T16:37:54+02:00

taskmasters taskmasters

15-05-2017

For this item, we let L be the length. With this representation, the value of the width becomes, L + 1.4. The area of a rectangle is calculate by multiplying the dimensions.
Area = Length x Width
Area = (L) x (L + 1.4) = 13.95
The value of L from the equation is 3.1 and L+1.4 is equal to 4.5. Thus, the length is 3.1 ft and width is 4.5 ft.

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