It is approximately equal to 1.732.
This needs to be calculated by computer.
Turn on the computer, first press the root sign, as shown below, and then press 3 to get the result.
Value after the root sign of 1-20:
√ 1= 1
√2= 1.4 14
√3= 1.732
√4=2
√5=2.236
√6=2.449
√7=2.646
√8=2.828
√9=3
√ 10=3. 162
√ 1 1=3.3 17
√ 12=3.464
√ 13=3.606
√ 14=3.742
√ 15=3.873
√ 16=4
√ 17=4. 123
√ 18=4.243
√ 19=4.359
√20=4.472