Question

In figure o is the circumcentre of the triangle ABC, AB=AC and line OD perpendicular to BC =16Cm OD=6 Cm.
What is the circumradius?
Calculate the length of sides AB and AC?

Answer 1

Answer:

The correct option is D

13 cm

Given AB = AC, OD

⊥

BC, BC = 24 cm and OD = 5 cm

We know that that perpendicular from the centre bisects the chord. Also given BC = 24 cm.

So, BD = 12 cm

Join AB.

Now

(OB)2=(BD)2+(OD)2=12+52=144+25=169

∴OB=circumradius=13 cm