Seudónimo
Seudónimo
25-04-2018
Mathematics
contestada
please help thank you.
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musiclover10045
musiclover10045
25-04-2018
full circle = 2 x 30 x PI = 60 PI
XY = 90 degrees
XPY = 360 -90 = 270 degrees ( 3/4 of a full circle )
XPY = 3/4 x 60PI = 45PI
answer is C 45PI
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