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40. A fly buzzes four and a half times around Kit Yan's head. The fly ends up on the opposite side from where it started. If the diameter of his head is 14 cm, what is the total distance the fly travels and its total displacement?​

Sagot :

Answer: 10cm/12cm

Explanation A fly is sitting at the midpoint of a wooden chord of a circular wheel. The wheel has a radius of  and the chord has a length of   a How far from the hub (center) is the fly