answer any of the blank questions, preferably 23

Mathematics
Tutor: None Selected Time limit: 1 Day

Dec 26th, 2014

23.

Area = 9pi  m2

 Angle = 22.50

Area = pi * 22.5/360 * r2 = 9pi

Pi *45/720* r2 = 9 pi

1/16 * r2  =9

r2  =144

r = 12


Dec 26th, 2014

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