Question

The cost of levelling a ground in the form of a triangle having the sides 51m,37m,and 20m at the rate of 3 per m² is 918. State whether the statement is true or false and justify your answer​

Answer 1

Step-by-step explanation:

True, Let a = 51m, b = 37m, c = 20m

s = (a + b + c)/2 = (51 + 37 + 20)/2 = 108/2 = 54 m

∴ Area of triangular ground = root under(√s(s - a)(s - b)(s - c))

= root under√54(54 - 51)(54 - 37)(54 - 20)

= root under (√54 x 3 x 17 x 34) = 306 m2

Cost of levelling the ground = Rs 3 x 306 = Rs 918

Answer 2

Answer:

true

Step-by-step explanation:

s=a+b+c/2= 20+37+51/2= 54

area of triangle √s(s-a)(s-b)(s-c)= √(54-51)(54-37)(54-20=√54×34×17×3=√ 93636=306m²

cost of levelling= 306×3=918

hope it help mark as branliest