Answer:
The height of the rock is 15 mm.
Step-by-step explanation:
Given : Cristian put a large rock on the bottom of the terrarium he made for his pet turtle.
To find : How high is the rock?
Solution :
The rock is a right rectangular prism 10 cm wide by 12 cm long.
Let the height be 'h'.
The volume of the right rectangular prism is 
i.e. 

The rock displaces 1800 cm³ of water.
i.e. The volume of the right rectangular prism is equal to the rock displaces of water.
So, 


Therefore, the height of the rock is 15 mm.
CoolAnswer:
Step-by-step explanation:
Answer:
It is 0.67
If the number after the number you want to round is bigger than 5 then the number would be added with 1