" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1*6=6*7=42
pole powierzchni bocznej prostopadłoscianu wynosi 42cm.
6m*7m=42m2 - dwie sciany
7m2*2+42m2*2= 14m2+84m2=98m2