The length of a rectangle is four feet less than twice width. The area of the rectangle is 70 square feet. Find the dimensions of the rectangle

Question

Mathematics

Dalton Webb

7 May, 04:22

The length of a rectangle is four feet less than twice width. The area of the rectangle is 70 square feet. Find the dimensions of the rectangle

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Answers (1)

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Rosemary Mccarthy · Answer 1

70=A=Lw

L=2w-4

70 = (2w-4) w

70=2w²-4w

70=2 (w²-2w)

35=w²-2w

0=w²-2w-35

0 = (w+7) (w-5)

-7=w or w=5

Measurements aren't negative

w=5 ft

L=2 (5) - 4

L=6 ft