" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
jadi a. U8= 9+(8-1)4
= 9+28 = 37
b. Sn= n/2(2a + (n-1)b)
S10= 10/2 (2(9)+(10-1)4)
= 5(18+36) = 5(54)
= 270
semoga membantu :)