Maths / Circles / Relationship Between Radius of Circle And Tangent

QUESTION

PT is a tangent to a circle whose centre is O. If PT = 12 cm and PO = 13 cm then find the radius of the circle.

 OPTIONS A. 5cm B. 4cm C. 4.5cm D. 5.5cm
Right Option : A

EXPLANATION
Explain TypeExplanation Content
Text
 Using Pythagoras theorum, $\dpi{120} \fn_jvn \large PO^2=PT^2+TO^2$Radius = TO = 5cm

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