Evaluate
18\sqrt{545}\approx 420.214231077
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\sqrt{1962\times 90}
Multiply 2 and 981 to get 1962.
\sqrt{176580}
Multiply 1962 and 90 to get 176580.
18\sqrt{545}
Factor 176580=18^{2}\times 545. Rewrite the square root of the product \sqrt{18^{2}\times 545} as the product of square roots \sqrt{18^{2}}\sqrt{545}. Take the square root of 18^{2}.
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