1.

Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of (pi)/(6) at the centre.

Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Plane <a href="https://interviewquestions.tuteehub.com/tag/angle-875388" style="font-weight:bold;" target="_blank" title="Click to know more about ANGLE">ANGLE</a> `theta=(l)/(<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>)` radian <br/> `:.(pi)/(6)=(l)/(3l)( :. theta=(pi)/(6) and r=31 cm)`<br/> `:.l=31xx(pi)/(6) cm=(31xx3.14)/(6) cm` <br/> `16.22 cm` <br/> By <a href="https://interviewquestions.tuteehub.com/tag/rounding-1191583" style="font-weight:bold;" target="_blank" title="Click to know more about ROUNDING">ROUNDING</a> off to <a href="https://interviewquestions.tuteehub.com/tag/three-708969" style="font-weight:bold;" target="_blank" title="Click to know more about THREE">THREE</a> significant figures, it would be `16.2 cm`</body></html>


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