diketahui barisan geometri u4=16 u 6 =64.suku ke 10 barisan tsb adalah

• U4 (ar^3) = 16
U6 (ar^5) = 64

• ar^5/ar^3 = 64/16
r^2 = 4
r = 2, a = 2

• S10 = a (r^n-1)/r-1
= 2 (2^10-1)/2-1
= 2 (1024-1)/1
= 2 (1023)/1
= 2046/1
= 2046