2 pi r = 2 pi * 9 = 18 pi
1/3 * 18 pi = 6pi
6pi = 2 pi r
6 = 2r
r = 3
Promien podstawy stozka wynosi 3cm.
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2 pi r = 2 pi * 9 = 18 pi
1/3 * 18 pi = 6pi
6pi = 2 pi r
6 = 2r
r = 3
Promien podstawy stozka wynosi 3cm.