MrPennyworth MrPennyworth

05-08-2017
Mathematics

contestada

If the length of a rectangle is three times it's width and the perimeter is 48 units, what are the dimensions of the rectangle?

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Аноним Аноним

05-08-2017

length = 3x and width = x
perimeter = 48 = 2(3x) + 2x
8x = 48
x = 6

dimensions are width = 6 and length = 18

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QueenArix QueenArix

05-08-2017

2l + 2w = 48

3w = l

2(3w) + 2w = 48

6w + 2w = 48

8w = 48
/8 /8

w = 6

2l + 2(6) = 48

2l + 12 = 48
-12 -12

2l = 36
/2 /2

l = 18

Length is 18 width is 6

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