find the cost of laying grass in triangular field of sides 50m,65m,and 65m at the rate of rs 7per m^2
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• perimetre of sides of triangle= sum of sides
= 50+65+65= 180
rate= 7 ×180= 1260 RS
= 50+65+65= 180
rate= 7 ×180= 1260 RS
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