A triangular land has sides 65m, 156m and 169m.if the land have to be ploghed at Rs. 2.50 per m², find the total cost of Ploughing.
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Step-by-step explanation:
Sides of the triangle are a=50m,b=65m,c=65m
Area of triangle, by Heron's formula
=
s ( s−a)(s−b)(s−c)
where,
s=2a+b+c
s=250+65+65
s=90
Area of triangle = 90(40)(25)(25)
Area of triangle = 1500m2
Cost of laying grass = Area ×7
Cost of laying grass =1500×7
Cost of laying grass = Rs 10500
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