Question

solve the sum it's very hard class x chapter 12​

Answer 1

Let the side of equilateral triangle A

Area of equilateral triangle = 1732.5 cm^

√3/4 (a)^ = 17320.5

1.73205/4 a^= 17320.5

Each sector of measures 60°

Area of sector ADEF = 60°/360° x π x r^

1/6 x π x (100)^

3.14 x 10000/6

15700/3 cm^

Area of shaded region = area of equilateral triangle - 3 x area of each sector

= 17320.5 - 3 x 15700/3

= 17320.5 - 15700 = 1620.5 cm^