The length and breadth of a rectangular field are in the ratio 7 is to 5 and its perimeter is 384 find the cost
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length=7x
breadth=5x
perimeter=2(l+b)
therefore= 2(7x+5x)= 384
14x+10x=384
24x=384
x= 384/24
x= 16
length = 7x = 7 × 16=112
breadth= 5x= 5×16= 80
cost of filling the entire area with tiles= l×b
112×80= 8960
breadth=5x
perimeter=2(l+b)
therefore= 2(7x+5x)= 384
14x+10x=384
24x=384
x= 384/24
x= 16
length = 7x = 7 × 16=112
breadth= 5x= 5×16= 80
cost of filling the entire area with tiles= l×b
112×80= 8960
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