Travel Clock
a minute arm of a clock is 10cm long .the number of minutes taken by the tip of the arm to travel 10 cmi is?
a.15
b.10
c.20
d.5
ans:-10 please show me how.
think of an equalateral triangle with angles of 60 degrees each. 60 degrees is 1/6th of an hour which is 10 minutes.
the triangle is 10 cm on each side.
hope this helps
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