Question 1083852
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The area of this sector is {{{30/360}}} = {{{1/12}}} part of the entire/whole circle area.


The circle area is {{{pi*r^2}}} = {{{pi*60^2}}} square millimeters.


Hence, the sector area is {{{1/12}}} of it, i.e. {{{(1/12)*60^2*pi}}} = {{{(3600/12)*pi}}} = {{{300*pi}}} square millimeters.
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