Question 953229
We'll have to use the Pythagorean Theorem, which is {{{a^2+b^2=c^2}}}. {{{a}}} and {{{b}}} are the two sides, while {{{c}}} is the hypotenuse.
{{{11^2+17^2=c^2}}}
{{{121+289=c^2}}}
{{{410=c^2}}}
{{{sqrt(410)=20.2484567313...}}}
Let us round {{{20.2484567313...}}} to {{{20.25}}}. Thus, the length of AC is 20.25.