Step-by-step Solution:

\[ \textbf{Convert } 265_{10} \text{ to hexadecimal:} \] \[ 265 \div 16 = 16 \ \text{remainder } 9 \] \[ 16 \div 16 = 1 \ \text{remainder } 0 \] \[ 1 \div 16 = 0 \ \text{remainder } 1 \] \[ \text{Reading remainders from bottom to top: } 265_{10} = 109_{16} \] \[ \boxed{265_{10} = 109_{16}} \]