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