Answer
$5460$
Work Step by Step
The general formula to find the nth partial sum of a Geometric sequence is given as: $ S_{n}=\dfrac{a(1-r^n)}{(1-r)}$
$ a_1=4$ wen $ i=1$
Now, $ S_{6}=\dfrac{(4) \times (1-(4)^{6})}{(1-4)}=4 \times (\dfrac{-4095}{-3})$
Our answer is: $ S_{6}=5460$
