Evaluate the square root, if possible, without using a calculator. $\sqrt { \frac { 1 } { 81 } }$
A) $\frac { 1 } { 9 }$
B) $\frac { 1 } { 13 }$
C) $\frac { 1 } { 11 }$
D) $\frac { 1 } { 10 }$
E) not real

Question

Quizplus · Accepted Answer

The square root of $\frac{1}{81}$ is $\frac{1}{9}$ because $9 \times 9 = 81$, so $\sqrt{\frac{1}{81}} = \frac{1}{\sqrt{81}} = \frac{1}{9}$.

Evaluate the Square Root, If Possible, Without Using a Calculator 181\sqrt { \frac { 1 } { 81 } }811​​

Evaluate the Square Root, If Possible, Without Using a Calculator $\sqrt { \frac { 1 } { 81 } }$