Question

Two circles of radii 5.5 cm and 4.2 cm touch each other externally then distance between their centres is ______.

Options

• 9.7 cm

• 1.3 cm

• 5.5 cm

• 4.2 cm

Answer 1

Two circles of radii 5.5 cm and 4.2 cm touch each other externally then distance between their centres is 9.7 cm.

Explanation:

The distance between the centres of circles touching externally is equal to the sum of their radii.