" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
P=½nR² 2π/n
n - liczba boków
R - promień okręgu opisanego na wielokącie
P=1/2*12*5²*2π/12
P=6*25*2π/12
P=150*2*3,14/12=150*6,28/12=12,5*6,28=78,5