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Alla [95]
3 years ago
5

The perimeter of a rectangle is 40 inches. if its length is three times its width, find the dimensions.'

Mathematics
1 answer:
Tresset [83]3 years ago
4 0
The perimeter of a rectangle could be determined using
\boxed{p = 2(l+w)}

From the question above, we could draw informations
p = 40 inches
l = 3w

plug in the info to the perimeter formula
p = 2(l + w)
40 = 2(3w + w)
40 = 2(4w)
40 = 8w
w = 40/8
w = 5

l = 3w
l = 3(5)
l = 15

The dimension:
l = 15 in
w = 5 in
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