Question

Two circle of radii $5.5cm$ and $4.2cm$ touch each other externally. Find the distance between their centres.

Answer 1

Radius of one circle $\left(r_1\right)=5.5cm$

Radius of another circle $\left(r_2\right)=4.2cm$

Since the circle touches each other externally.

Therefore,

Distance between there centers

$=r_1+r_2$

$=5.5+4.2=9.7cm$