Solve 3/sqrt{27}

$$\frac { 3 } { \sqrt { 27 } }$$

Evaluate

$$\frac{\sqrt{3}}{3}\approx 0.577350269$$

Solution Steps

Factor 27=3^{2}\times 3. Rewrite the square root of the product \sqrt{3^{2}\times 3} as the product of square roots \sqrt{3^{2}}\sqrt{3}. Take the square root of 3^{2}.

$$\frac{3}{3\sqrt{3}}$$

Rationalize the denominator of \frac{3}{3\sqrt{3}} by multiplying numerator and denominator by \sqrt{3}.

$$\frac{3\sqrt{3}}{3\left(\sqrt{3}\right)^{2}}$$

The square of \sqrt{3} is 3.

$$\frac{3\sqrt{3}}{3\times 3}$$

Cancel out 3 in both numerator and denominator.

$$\frac{\sqrt{3}}{3}$$