Question

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

Answer 1

Answer:

Step-by-step explanation:

Hi ,

Let R and r are radii of two circles.

R = 5.5 cm , r = 4.2 cm

If two circles touch externally then,

the distance between two centres

D = R + r

D = 5.5 cm + 4.2 cm

D = 9.7 cm

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