Question

find the cost of levelling the ground in the shape of a triangle having sides 51m , 37m and 20m at the rate of rupees 3 per meter square

Answer 1

Length of sides = 51, 37  and 20 

$s = \frac{51+37+20}{2} = \frac{108}{2} =54$

$Area = \sqrt{s(s-a)(s-b)(s-c)} \\ \\A= \sqrt{54(54-51)(54-37)(54-20)} \\ \\A= \sqrt{54 \times 3 \times 17 \times 34} \\ \\A = 306\ m^2$

Rate = Rs. 3 per m²
Cost  = 3×306 = Rs. 918

Answer 2

Answer:ti7

Step-by-step expljranation: