Evaluate
4\sqrt{13}\approx 14.422205102
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\sqrt{64+12^{2}}
Calculate 8 to the power of 2 and get 64.
\sqrt{64+144}
Calculate 12 to the power of 2 and get 144.
\sqrt{208}
Add 64 and 144 to get 208.
4\sqrt{13}
Factor 208=4^{2}\times 13. Rewrite the square root of the product \sqrt{4^{2}\times 13} as the product of square roots \sqrt{4^{2}}\sqrt{13}. Take the square root of 4^{2}.
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