Length of a rectangle exceeds its breadth by 4 m. If the perimeter of the rectangle is 84 m, find its length and breadth.
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Answered by
14
breadth = length + 4
length = breadth - 4
perimeter = 84
2 (l+b) = 84
2 (b-4+b) = 84
2 (2b-4) = 84
2b-4 = 84/2 = 42
2b-4 = 42
2b = 42 + 4 = 46
b = 46/2
b = 23
l = b-4
l = 23-4
l = 19
length = breadth - 4
perimeter = 84
2 (l+b) = 84
2 (b-4+b) = 84
2 (2b-4) = 84
2b-4 = 84/2 = 42
2b-4 = 42
2b = 42 + 4 = 46
b = 46/2
b = 23
l = b-4
l = 23-4
l = 19
Akshitha0912:
read the question properly. length exceeds its breadth by 4 I.e.., b = l +4
Thank You Akshitha
u r welcome
Its Ok!
Answered by
3
sorry answer is b=19 and l=23
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