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kirza4 [7]
3 years ago
8

if a length of a rectangle is four times its width. what is its perimeter is 90m. how can I find the dimentions

Mathematics
1 answer:
arlik [135]3 years ago
4 0
W = width
4w = length

perimeter = 2(length) + 2(width)
perimeter = 2(4w) + 2w
perimeter = 8w + 2w
perimeter = 10w
90 = 10w
9 = w

length = 4w, 4(9) = 36. 
 
Length is 36 m. Width is 9 m.
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