Question
The base of the triangular area is two times its
height. If the cost of farming area is Rs. 2000 and Rs. 80 per hectare. Find its base (1 hectare = 10000 m²). ÂSolution
Area of the field = Total cost/rate = 2000/80 = 25 hectares  = 25 x 10000 m2 = 250000 m2 Let altitude = a m Then base = 2a Now, ½ x b x h = 250000 ½ x 2a x a = 250000 a2 = 250000 a = 500 m base = 1000 m
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