Question 1157938
{{{2r^2=1/9}}}


Common Ratio, r:

{{{r^2=1/18}}}

{{{r=sqrt(1/(2*9))}}}

{{{r=(1/3)sqrt(1/2)}}}

{{{r=(1/3)sqrt(1/2)sqrt(2/2)}}}

{{{r=(1/3)(1/2)sqrt(2)}}}

{{{highlight(r=sqrt(2)/6)}}}



Sum of First Five Terms

{{{2((1-(sqrt(2)/6)^5)/(1-sqrt(2)/6))}}}

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