" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Caranya:
3×3 + 3×4×2 = 9+12×2
= 21×2
= 42
3×4= 12
9+12+9+12= 42 cm
Jadi kelilingnya adalah 42cm²