Question

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.​

Answer 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

Answer 2

Answer:

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