+3 votes
in Class 9 by kratos

The base of a triangular field is three times its altitude. If the cost of cultivating the field at Rs. 24.68 per hectare be Rs. 333.18, find its base and height.

1 Answer

+6 votes
by kratos
 
Best answer

Area of the field = Total cost/rate = (333.18/25.6)hectares = 13.5 hectares

(13.5 x 10000) m2 = 135000 m2 .

Let altitude = x metres and base = 3x metres.

Then, (1/2) 3x x = 135000 <=>x2 = 90000 <=>x = 300.

Base = 900 m and Altitude = 300 m.

...