" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
=2×pi×7×7=98 pi cm^2
L tabung tanpa tutup= 2×pi×r×t+pi×r^2
=2×pi×7×21+pi×7×7
=×94 pi + 49 pi
=343 pi cm^2
Luas permukaan=98 pi+343 pi= B.441 pi cm^2