Given that,

Question:

Given that, $\sqrt{4096}=64$, the value of $\sqrt{4096}+\sqrt{40.96}$ is

(a) 74

(b) $60.4$

(c) $64.4$

(d) $70.4$

Solution:

(d) Given, $\sqrt{4096}=64$

So, $\sqrt{4096}+\sqrt{40.96}$

$=64+\sqrt{4096 \times 10^{-2}}$

$=64+\sqrt{4096} \sqrt{10^{-2}}$

$=64+64 \times 10^{-1}$

$=64+6.4=70.4$

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