Question

In the given figure, chords AB = AC = 6cm. The length of BC, if radius is 5 cm, is

(A) 9.6 cm
(B) 4.8 cm
(C) 19.2 cm
(D) 8.0 cm​

Answer 1

Answer:

your answer is 9.6

Step-by-step explanation:

let od be x and oa be (5-x)

and then use Pythagoras theorem

in triangle ocd

5²=x²+cd²

cd²=25-x²....... 1

in triangle acd

6²=(5-x) ²+cd²

cd²=11+10x-x²....... 2

by eq 1 and 2

11+10x-x²=25-x²

10x=14

x=1.4

cd²=25-(1.4) ²

cd²=23.04

cd=4.8

since bc =2cd

4.8×2

9.6