Evaluate
15\sqrt{2}\approx 21.213203436
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5\sqrt{18}
Multiply 2 and 9 to get 18.
5\times 3\sqrt{2}
Factor 18=3^{2}\times 2. Rewrite the square root of the product \sqrt{3^{2}\times 2} as the product of square roots \sqrt{3^{2}}\sqrt{2}. Take the square root of 3^{2}.
15\sqrt{2}
Multiply 5 and 3 to get 15.
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Limits
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