Question 1172656
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The area of a sector is equal


    area = {{{(1/2)*r^2*alpha}}} 


where  r  is the radius and  {{{alpha}}}  is the central angle, in radians.


So, substitute the given numbers and calculate.


You are very lucky, since in this problem, the angle is just given to you in radians, 
so you DO NOT NEED to convert it from the degree measure to radians (!)
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Having my instructions, boldly go forward (!)