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 ∆ = πR 2 =π(a/√3) 2 = π (42√3/√3) 2 =π × 422 = 22/7 × 42 × 42 = 5544 cm 2
Powdery mildew disease is controlled by spray of
Irrigation water safely used for irrigation purpose have SAR value
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