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the width of a rectangle is half its length. the perimeter is 36 inches. whar are the dimensions of the rectangle
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the width of a rectangle is half its length. the perimeter is 36 inches. whar are the dimensions of the rectangle

User Blackdog
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1 Answer

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Width of a rectangle is half its length:
2w = l
Perimeter is 36
2w + 2l = 36

Plug first equation into second (substitution)

2w + 2(2w) = 36
2w + 4w = 36
6w = 36
w = 6

Plug back into first equation to solve for l

2(6) = 12 = l
User Mattigins
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