Question

can you please do question no 2

Answer 1

ab=8
ac=4(perpendicular from the center bisects the chord)
oa=5
oa^2=oc^2+ac^2
5^2=oc^2+4^2
25-16=oc^2
9=oc^2
3=oc
oc+cd=5cm (radius of circle)
3+cd=5
cd=2cm
hope this will be helpful to u