Mathematics
Grade9
Easy
Question
Find the center and radius of the circle.
- (0, 0) and r = 1
- (0, 0) and r = 2
- (0, 0) and r = 3
- (0, 0) and r = 4
Hint:
The radius of circle is the distance between center of circle and any point on the circle. Using distance between two points formula find radius.
The correct answer is: (0, 0) and r = 2
Given, The centre of circle is (0, 0)
The circle passes through the point (0, 2)
Radius of circle = Distance between centre (0,0) and the point that lies on the circle (0.2)
Therefore, (0,0) and r = 2 are the centre and radius of the circle respectively.
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