# The distance between centres of two circles of radii 3 cm and 8 cm is 13 cm :

The distance between centres of two circles of radii 3 cm and 8 cm is 13 cm. If the points of contact of a direction common tangent to the circles are P and Q, then the length of the line segment PQ is:

- 11.5 cm
- 12 cm
- 11.9 cm
- 11.58 cm

**Answer: (2) 12 cm **

**Explanation:-**

According to the question in the figure –

Then, the length of the line segment P Q is 12 cm.

Hence, the answer is (2) 12 cm.