12.
A clock contain hour's hand of length 14 cm. Calculate the displacement produced by the tip of the
hand in the time of 9 hours is
A) 14√2cm B) 25√2 cm C) 2112 cm D) 28V2 cm
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Answer:
a)14√2
Explanation:
radius=14
{a²+b²=c²}pythagoras theorem
14²+14²
=196+196=√392
=7√8
=14√2
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