mathematics question

Mathematics
Tutor: None Selected Time limit: 1 Day

Sep 2nd, 2015

Thank you for the opportunity to help you with your question!

area of sector=30/360*pie*r^2

area of triangle= 0.5 *r^2 *sin30

shaded=1/12r^2*pie-0.25r^2=5

R^2(1/12pie-0.25)=5

r^2=5/1/12pie-0.25

r=squareroot of 5/1/12pie-0.25

thanks

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Sep 2nd, 2015

what is the final answer?

Sep 2nd, 2015

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Sep 2nd, 2015
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