PrachiR wrote:

Hey Guys,

Can anyone please help me solve this question?

We need to find the length of AB.

Please provide the explanation to the answer as well.

Thanks in Advance

If A,B are centers of circle then 7cm line and 10cm line will be tangents to A,B respectively. So, the triangle is right angled at joining of 10cm and 7cm line.

\((AB)^2 = 10^2 + 7^2\)

AB = \(\sqrt{149}\)