Answers

2016-01-07T21:00:53+05:30
The perimeter of the rectangle is 2(l+b)
the length is x
the breath is 3x
then 
      2(x +3x)=800
         2x + 6x = 800
         8x=800
           x =100m
then 3x= 300m
∴length is 100 and breath is 300

∴the area l × b
   300 × 100
   30000m^{2}
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2016-01-07T21:08:15+05:30
Let the breadth be = x
so, the length will be three times = 3x
perimeter = 2(L+B)
800= 2 (3x+x)
800/2=4x
400=4x
400/4=x
100=x
breadth = x=100
length=3x=300
Area=LX B
Area=300X 100
Area= 30000
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