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ICSE Class 9 Answered

the base of a triangular field is 2.4 times the height, if the cost of levelling the field @ Rs 20 per sq. m is Rs 9600, find its base and height.
Asked by nisha_vini29 | 06 Dec, 2015, 11:47: PM
answered-by-expert Expert Answer

doing

Let the height be H. Base = 2.4H

Area = half X base X height = 1.2H X H = 1.2H2

Cost of levelling is 9600 at Rs 20 per square meter.

Hence, area of the field = 9600 / 20 = 480 sq. m.

Hence, 1.2H2 = 480 

H2 = 400

H = 20 meter

Hence, base = 2.4 X 20 = 48 meter

Answered by | 07 Dec, 2015, 06:13: PM

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