Q. 94.6( 5 Votes )

<span lang="EN-US

Answer :


The angle between tangent and radius is 90°.
OCA=90°


Also OCB=90°


OC AB


AC=1/2 AB(Perpendicular from center bisects chord(AB) of the circle)


AC= 1/2 (48)=24cm


Now we consider the right-angled triangle OAC,


(OA)2=(OC)2 + (AC)2


(r)2=(7)2 + (24)2 =625


r= 625 =25cm


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses