Question
The length of the each side of an equilateral triangle
is 21β3. The area of incircle, (cm 2 ) isSolution
Area of incircle of a β = Οr 2 Β =Ο(a/(2β3)) 2 = Ο((21β3)/(2β3)) 2Β Β Β =Ο Γ (10.5)2 Β =(22/7) Γ 10.5 Γ 10.5Β = 346.5 cm2
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