The length of a tangent from a point A at a distance 5cm from the centre of the circle is 4cm find the radius of circle.
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4
Step-by-step explanation:
by pythagoras theorem
5² = 4² + x² ( x is radius of circle )
25 - 16 = x²
9 = x²
3 = x
therefore radius of the circle is 3 cm
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Answered by
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Step-by-step explanation:
The length of a tangent from a point A at a distance 5cm from the centre of the circle is 4cm find the radius of circle.
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