the perimeter of a rectangle is 49 meters. The length of it is 4 meters less than 5 times it's breadth. Find the length.
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Answered by
1
Answer:
Length = 19.75 m
Step-by-step explanation:
perimeter of a rectangle = 2(length + breadth)
49=2(l+b)
But l = 5b-4 (given)
∴ 49 = 2(5b-4 + b) = 2(6b-4)
6b-4 = 49/2 = 24.5
6b=24.5+4=28.5
b=28.5/6 = 4.75 m
l = 5b-4 = 5(4.75)-4
= 19.75 m
Check:
P=2(l+b) = 2(19.75+4.75) = 2(24.5) = 49
Answered by
0
Answer:
thanks bro for marking my answer as a brainlist
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