" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
64 = 4 x πr²
πr² = 16
r² = 16/π
r = √ 16/π
r = 4/√π
jadi jawabannya c.
1/3 π r² (12) = 64
π r² = 16
r = √ (16/π) = 4/ √π