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Exercise 4.4 1. The length of the tangent to a circle from a point P, which is 25 cm away from thecentre is 24 cm. What is the radius of the circle? tell long answer |
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Answer» Let AP be a tangent drawn from P to a circle with centre O such that AP = 24 cm and OB = 25 cm.In RIGHT angled △ OAB,OP 2 =OA 2 +AP 2 25 2 =OA 2 +24 2 OA 2 =49OA=7 cmHence, the radius of circle is 7 cm.solution |
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