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Find the sum of indicated number of term...

Find the sum of indicated number of terms of each of the following G.P.
(i) 2, 4, 8, …, to 10 terms
(ii) ` sqrt(2) , 2 , sqrt(8),..` to 12 terms

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` a = 2 , r = 2 `
` S_(10) = (a(r^(10) -1))/(r-1) = 2xx(2^(10-1))/(2-1)`
`2 xx (1024 - 1) = 2 xx 1023 = 2046 `
(ii) ` 63 (sqrt(2) + 2)`
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