" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
tinggi tabung = diameter bola = 2r
L bola = 4pir² = 150.....pir² = 150/4
L tabung = 2pir² + 2pir(2r) = 6pir² = 6. 150/4 = 3/2 . 150