Evaluate
2\sqrt{85}\approx 18.439088915
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\sqrt{144+14^{2}}
Calculate 12 to the power of 2 and get 144.
\sqrt{144+196}
Calculate 14 to the power of 2 and get 196.
\sqrt{340}
Add 144 and 196 to get 340.
2\sqrt{85}
Factor 340=2^{2}\times 85. Rewrite the square root of the product \sqrt{2^{2}\times 85} as the product of square roots \sqrt{2^{2}}\sqrt{85}. Take the square root of 2^{2}.
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