Two circles of radii 5.5 cm and 4.2 cm touch each other internally.find the distance between their
centres.
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it is given that two circle having radii 5.5 cm and 4.2 cm touch eachother ather extremely . We know the distance between center of the circle touching extremely is equal to the sum of their radii, thus the distance between their center is 9.7 cn
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