Question

The base of a triangular field is 2.4 times its height. If the cost of levelling the field at the rate of Rs 20 per square meter is Rs 9600, then the height of the field is _______________ m.

Answer 1

(0.5 marks)

Let the height of the field be 'h'

base 2.4 h

$\frac{1}{2}\times 2.4h\times h\times 20=9600$ (0.5 marks)

$h^2=400$ (0.5 marks)
$h=20cm$ (0.5 marks)