Question 971391
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The advantage to using radians for the angle measure is:
{{{Arclength=r(theta)}}} 
where r=radius, and {{{theta}}} = the angle in radians.
For a clock, since the complete circle is {{{2(pi)}}},each hour is:
{{{1hr=2(pi)/12}}}={{{pi/6}}}
There are two hours (6 o'clock to 8 o'clock) and the radius is 9 inched, so
{{{Arclength=r(theta)}}}
{{{Arclength=(9in)(2(pi)/6)}}}
{{{Arclength=18in(pi)/6}}}={{{3(pi)in=9.42in}}}
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ANSWER: The correct response is (a). 9.42 inches