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Question

If a = 0.1039, then the value of `sqrt(4a^2 - 4a + 1) + 3a` is


Options:
A .  0.1039
B .  0.2078
C .  1.1039
D .  2.1039
Answer: Option C

`sqrt(4a^2 - 4a + 1) + 3a` = `sqrt((1)^2 + (2a)^2 - 2 xx 1 xx 2a)` + 3a

`sqrt((1 + 2a)^2) + 3a` =  (1 - 2a) + 3a =  (1 + a) = (1 + 0.1039) =  1.1039.




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