Final answer:
The quantity of water in the tank when it is half full is 12,500 liters, calculated by dividing the tank's full capacity (25 cubic meters) by 2 and then converting the result to liters.
Step-by-step explanation:
The question asks for the quantity of water in liters if a tank with a capacity of 25 cubic meters is half full. Since 1 cubic meter is equivalent to 1,000 liters, we can calculate the volume of water in the tank when it is half full. To do this, we take the full capacity of the tank (25 cubic meters) and divide it by 2 to find the volume when half full.
25 cubic meters / 2 = 12.5 cubic meters
Now we convert the resulting cubic meters into liters by multiplying by 1,000:
12.5 cubic meters x 1,000 liters/cubic meter = 12,500 liters
To find the quantity of water in the tank in liters, we need to determine how many cubic meters of water is in the tank and then convert that to liters. Since the tank is half full, the quantity of water in the tank is half of its capacity. So, half of 25 cubic meters is 12.5 cubic meters of water.
Since one cubic meter is equivalent to one thousand liters, 12.5 cubic meters is equivalent to 12,500 liters. Therefore, the quantity of water in the tank, when it is half full, is 12,500 liters.