#### Answer

$113^{\mathrm{o}}~\mathrm{F}$

#### Work Step by Step

In order to convert Celsius to Fahrenheit, we use the formula:
$F=\displaystyle \frac{9}{5}C+32$
We plug in $45$ for C:
$F=\displaystyle \frac{9}{5}(45)+32$
$=81+32$
$=113^{\mathrm{o}}~\mathrm{F}$