For this case we have that the height is given by the following product:
When we multiply a number by multiples of 10, what we must do is move the decimal to the right as many spaces as the number of zeros that has the multiple number of 10.
We note that 1000 has three zeros. Therefore, we must move the decimal three spaces to the right.
Step-by-step explanation: it takes him 2 hours to fill 1800 another 2 hours would be 12pm if you have 1000+1000 you get 2000. then add 800 and 800. you get 1600 add them all together you get 3600.
