" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
R=0,5a i 2 pod pierwiastkiem
R=0,5*6 i 2 pod pierwiastkiem
P= PI (3 i 2 pod pierwsiatkiem) do kwadratu
P= PI *9*2 =18PI
Obw. 2 PI r
2*PI*18 = 36 PI