### Home > A2C > Chapter 12 > Lesson 12.4.2 > Problem 12-182

12-182.

Find the sum of the first six terms of the series 2 + 6 + 18 + 54 + …. Homework Help ✎

Find the common ratio.

Using *t*(*n*) = *a* · *r* ^{n}^{ − 1} find *t*(6).

Now find the sum of the geometric series using: