" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
2*4=8
20+8=28
40-28=12
12: 4 = 3
Masz 4 krawędzi po 5cm
Masz 4 krawędzi po 2cm
Masz 4 krawedzi po 3cm
P= 2*(2*5) + 2*(2*3) + 2*(3*5)=
= 2*10 + 2*6 + 2*15=
= 10+ 12+ 30 =42 cm^2
p.s.cm^2 to znaczy że centymetry kwadratowe