The length of a rectangular plot exceeds its breadth by 5 meters. If the perimeter of the plot is 142 metres, find the dimensions of the plot.
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Answered by
6
length of the rectangular plot is 38 m breadth of the rectangle plot is 33 m.
142=2(l+b)
142=2l+2b
142=2(b+5)+2(b)
142=2b+10+2b
142=4b+10
4b=142-10
b=132/4=33
l=33+5=38
142=2(l+b)
142=2l+2b
142=2(b+5)+2(b)
142=2b+10+2b
142=4b+10
4b=142-10
b=132/4=33
l=33+5=38
ashrita2:
But explain how you have find length and breadth
assuming breadth as b then length will be b+5
Answered by
3
let the length be x
then , breadth=5x
perimeter=2(l+b )
142=2(x+5x)
142=2(6x)
142=12x
x=142÷12=11.84
dimension=l×b
11.84×5×11.84
700.928
then , breadth=5x
perimeter=2(l+b )
142=2(x+5x)
142=2(6x)
142=12x
x=142÷12=11.84
dimension=l×b
11.84×5×11.84
700.928
wrong answer
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