Solve sqrt{121/40}

$$\sqrt { \frac { 121 } { 40 } }$$

Evaluate

$$\frac{11\sqrt{10}}{20}\approx 1.739252713$$

Solution Steps

Rewrite the square root of the division \sqrt{\frac{121}{40}} as the division of square roots \frac{\sqrt{121}}{\sqrt{40}}.

$$\frac{\sqrt{121}}{\sqrt{40}}$$

Calculate the square root of 121 and get 11.

$$\frac{11}{\sqrt{40}}$$

Factor 40=2^{2}\times 10. Rewrite the square root of the product \sqrt{2^{2}\times 10} as the product of square roots \sqrt{2^{2}}\sqrt{10}. Take the square root of 2^{2}.

$$\frac{11}{2\sqrt{10}}$$

Rationalize the denominator of \frac{11}{2\sqrt{10}} by multiplying numerator and denominator by \sqrt{10}.

$$\frac{11\sqrt{10}}{2\left(\sqrt{10}\right)^{2}}$$

The square of \sqrt{10} is 10.

$$\frac{11\sqrt{10}}{2\times 10}$$

Multiply 2 and 10 to get 20.

$$\frac{11\sqrt{10}}{20}$$