Question

the sides of triangular ground are 5m, 7m and 8cm respectively.Find the cost of leveling the ground at the rate of RS 40 per sq. m​

Answer 1

Answer:

400√3

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Answer 2

Area of triangular ground =√10 (10-5) (10-7) (10-8)

                                           =√10 * 5 * 3 * 2

                                           =10√3

                                           =10 * 1.73 = 17.3 sq. m

Cost of levelling ground per sq. m = Rs. 40/ sq. m

Total cost = 17.3 * Rs. 10

                 =Rs. 173