Question 171997
This is going be to form a right triangle. Thus, you can use the Pythagorean formula a^2+b^2=c^2

a and b are the sides and c is the hypotenuse

16^2=b^2=23^2

256+b^2=529

Subtract 256 from both sides

b^2=273

b=16.522

b=16.5