" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
jari2 = 21/2 = 10,5 cm
luas permukaan bola = 4 x phi x r x r
4 x 22/7 x 10,5 x 10,5 = 1,386 cm kuadrat