" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
a=h/4
a={a+9}/4 -podstawiam za "h"
P=a*h
P={a+9}/4*(a+9)={a^2+9a+9a+81}/4={a^2+18a+81}/4
P={a^2+18a+81}/4 cm^2
{...}- w liczniku ułamka
^2- do kwadratu