Answer
$100^{\circ}C$.
Work Step by Step
The given formula is
$\Rightarrow C=\frac{5}{9}(F-32)$
Substitute $F=212^{\circ}$.
$\Rightarrow C=\frac{5}{9}(212-32)$
Simplify.
$\Rightarrow C=\frac{5}{9}(180)$
$\Rightarrow C=100$
Hence, the temperature is $100^{\circ}C$.
