Question
Point (4, 5) is the centre of a circle. A point (9, 11)
is lying on a circle. Find the area of the circle.Solution
In the figure (4,5) is the centre of the circle. ā“ Radius (r) = ā((4-9)^2+(5-11)Ā²) Ā Ā = ā(25+36) = ā61 ā“ Area of the circle = ĻrĀ² = Ļ(ā61)Ā² = 61Ļ unitĀ²
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