Question

two circles with radii 9 cm and 3cm touch each other internally find the distance between their center​

Answer 1

Answer:

Fact: If two circles of radius$r_{1}$  and $r_{2}$  touch each other internally then,  

Distance between their center will be =|$r_{2}-r_{1}$|

Here$r_{1} =3cm$,$r_{2}=8cm$

Hence distance between their center is =8−3=5 cm

Answer 2

Answer:

the distance between the centers is 3 cm.