Answer
$45 \text{ L}$
Work Step by Step
Convert by multiplying $\dfrac{1 \text{ L}}{1000 \text{ cm}^3}$ to obtain:
$=\require{cancel}
45,000 \cancel{\text{ cm}^3} \cdot \dfrac{1\text{ L}}{1000 \cancel{\text{ cm}^3}}
\\=\dfrac{45,000}{1000} \text{ L}
\\=45 \text{ L}$
