Cost of ploughing in a square field rs 2450 rate rs 2 per 100 sq m find the length
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rs 2 is the cost in square field on area = 100 sq m
rs1 is the cost. in square field on area = 100/2 sq m
rs 2450 is the cost..............area= (100/2)*2450 = 1225*100= 122500 sq m
area of square field is 122500 sq m
and
we know that area of square is length square
so
length square = 122500sq m
length = √122500 = 350m
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