\sqrt { \frac { 20 } { 2 } 9,8 }
Evaluate
7\sqrt{2}\approx 9.899494937
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\sqrt{10\times 9,8}
Divide 20 by 2 to get 10.
\sqrt{98}
Multiply 10 and 9,8 to get 98.
7\sqrt{2}
Factor 98=7^{2}\times 2. Rewrite the square root of the product \sqrt{7^{2}\times 2} as the product of square roots \sqrt{7^{2}}\sqrt{2}. Take the square root of 7^{2}.
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