You and your friends start school at atm from your house which are side by side you started on a bicycle and your friends started by walking who will reach the school first how much earlier compared to the other how do you measure up early or late arrival at school
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It is given that two circle having radii 5.5 cm and 4.2 cm touch each other externally. We know, the distance between the centres of the circles touching externally is equal to the sum of their radii. Thus, the distance between their centres is 9.7 cm.
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