An aquarium has a rectangular base that measures $50\text{cm}$ by $30\text{cm}$ and has a height of $40\text{cm}$. It is filled with water to a height of $20\text{cm}$. A metal block with a rectangular base that measures $25\text{cm}$ by $12\text{cm}$ and a height of $10\text{cm}$ is placed in the aquarium. By how many centimeters does the water rise?