" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
3/2 x 150 = 225
4 πr² = 150
πr² = 150 : 4
= 37,5
Luas permukaan tabung <tinggi = 2r>=
2πr² + 2πrt
2πr² + 2πr(2r)
2πr² + 4πr²
6πr²
6 x 37,5 = 225 cm²