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Question
The point (-4, -2) lies on a circle. What is the length of the radius of this circle if the centre is located at (-4, 4)?
The point (-4, -2) lies on a circle. What is the length of the radius of this circle if the centre is located at (-4, 4)?
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Solution
The correct option is B 6 units
Using distance formula,
Radius = √(x1−x2)2+(y1−y2)2
= √(−4−(−4))2+(−2−(4))2
= √0+(−6)2 = 6 units
Hence, radius of the given circle is 6 units.
6 units
Using distance formula,
Radius = √(x1−x2)2+(y1−y2)2
= √(−4−(−4))2+(−2−(4))2
= √0+(−6)2 = 6 units
Hence, radius of the given circle is 6 units.
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