Answers

2014-08-12T19:56:57+05:30
L=5+b,p=40cm.
Perimeter of a rectangle =2(l+b)
40=2(5+b+b)
40=10+4b
30/4=b
b=7.5
l=12.5

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2014-08-17T17:19:22+05:30
Let the breadth of the rectangle be x.
According to the given conditions
Length = x+5
breadth = x
perimeter= 40cm
perimeter= 2(l+b)
      40     = 2( x+5+x )
      40     = 2( 2x+5 )
      40.    = 4x+10
      40-10 = 4x
      30.    =  4x
      30/4  = x
       x = 7.5
breadth = 7.5 cm
length = 7.5+5
          =. 12.5cm
  
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