Answers

2015-12-25T15:22:13+05:30
Breadth= x
∴length= 4x
area= l x b
but area = 30976
∴30976= (4x) (x)
= 30976= 4x²
 x²= 30976/4
x²= 7744
x= √(7744)
x= 88
∴breadth= x= 88
length= 4x= 4x88= 352
perimeter= 2(l+b)
          = 2 (352+88)
          = 880
        
0
2015-12-25T16:07:51+05:30
According to thegiven data
length(l)=4×width(w)
area of rectangle = 30976
              4w×w=30976
                  w²=30976/4
                     w=√7744
                       w=88
              l=4×88
                l=352
perimeter=2(l+b)
              =2(352+88)
perimeter=2×440
perimeter=880cm
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