Question

The sides of a triangular park are 8m 10m 6m . Find the cost of leveling of the park at the rate 10 rs per m² 9th class

Answer 1

Answer: 20.86m^2

Step-by-step explanation:

Semiperimeter of triangular park = (8+10+6)/2 = 12m.

Area of triangle heron's formula = Root {12(12-8)(12-10)(12-6)} = 24m2

Area of circle to be left out = Pie X (2/2)2 = 3.14m^2

Area used for growing grasses = Total area - area to be left out = 24m2 - 3.14m2 = 20.86m2