To rewrite \( 10^2 \) in expanded form, we recognize that \( 10^2 = 100 \).
We can now substitute this back into the expression:
\[ 23.45 \cdot 10^2 = 23.45 \cdot 100 \]
Now, we can multiply \( 23.45 \) by \( 100 \):
\[ 23.45 \cdot 100 = 2345 \]
Thus, the value of the expression \( 23.45 \cdot 10^2 \) is \( \boxed{2345} \).