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Given:
Area of Equilateral Δ = 196√3
Solution:
Area of Equilateral Δ = √3 a² / 4
196√3 = √3 a² / 4
a² = 196√3 ×4 / √3
a² = 784
a = √784 ⇒ a = 28 cm
Then measurements of sectors:
r = a / 2 ⇒ 28 / 2 ⇒ 14 cm (given in ques)
Ф = 60° (as equilateral Δ has each angle as 60°)
Area of 3 Sectors = 3 (Ф/360° × π r²)
= 3 (60°/360° × 22/7 × 14 × 14)
= 3 × 1/6 × 22 × 2 × 14
= 308 cm²
Area of Shaded Region = Area of triangle - Area of 3 Sectors
= 196√3 - 308
= 339.48 - 308
= 31.48 cm²
Answer = 31.48 cm² (or) (196√3 - 308) cm²
Area of Equilateral Δ = 196√3
Solution:
Area of Equilateral Δ = √3 a² / 4
196√3 = √3 a² / 4
a² = 196√3 ×4 / √3
a² = 784
a = √784 ⇒ a = 28 cm
Then measurements of sectors:
r = a / 2 ⇒ 28 / 2 ⇒ 14 cm (given in ques)
Ф = 60° (as equilateral Δ has each angle as 60°)
Area of 3 Sectors = 3 (Ф/360° × π r²)
= 3 (60°/360° × 22/7 × 14 × 14)
= 3 × 1/6 × 22 × 2 × 14
= 308 cm²
Area of Shaded Region = Area of triangle - Area of 3 Sectors
= 196√3 - 308
= 339.48 - 308
= 31.48 cm²
Answer = 31.48 cm² (or) (196√3 - 308) cm²
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