Question 1003174
An inner diameter of a car is 9/4 cm and thickness of tyre is 5/7 cm .what is outer radius of the tyre?
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ID of 9/4 --> radius of 9/8 cm
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9/8 + 5/7 = (9*7+8*5)/(8*7) = (63+40)/56
--> 103/56 cm