" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
πr²- wzor na pole kola
πr²=400m²
wiemy ze pi to w przyblizeniu 3,14
wiec : 3,14 *r²=400
r²=127.4
r=11.3 (w przyblizeniu)
πr²=400m²
3r²=400m²
r²≈133m²
r≈11m