Question
The length of the each side of an equilateral triangle
is 42√3 cm . The area of circumcircle, (cm 2 ) isSolution
Area of circumcircle of a ∆ = Ï€R 2  =Ï€(a/√3) 2  = Ï€ (42√3/√3) 2   =Ï€ × 422  = 22/7 × 42 × 42 = 5544 cm 2 Â
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