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Question
Choose the correct alternative:
Area of the circle centre at (1, 2) and passing through (4, 6) is
Options
5π
10π
25π
100π
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Solution
25π
Explanation:
r = CA
`= sqrt((4- 1)^2 + (6 - 2)^2)`
`= sqrt(9 + 16)`
`= sqrt 25`
= 5
∴ area = πr2
= π × 52
= 25 π
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