Question

A tangent PQ at a point of a circle of radius 3cm
meets a line through the center of a point Q so
that OQ=5cm then the length PQ is​

Answer 1

length of radius 3cm

Step-by-step explanation:

centre is o

length of OQ=5cm

let the point where the circle touches the tangent be A

OAQ is right angled triangle right angled at A

therefore by using pythagoras theorem

length of AQ=4cm

PQ=2AQ

PQ=2×4cm

PQ=8cm