A rectangular glass tank is half filled with water. The measurements of the tank are 30cm in height, 25cm in length and 20cm in width. How many litres of water will raise the water level in the glass tank by 5cm?
each 1cm layer of water has a volume of 25x20x1 = 500 cm^3
so, it doesn't matter how much water is in the tank -- a 5cm rise in height contains 2500 cm^3 of water.
So, how many litres is that?
2500 cubic centimetres = 2.5 liters.
Thanks Steve
<3
if s=ut=1/2at^2,make a the subject of the formula
To find out how many liters of water will raise the water level by 5cm, we need to first calculate the volume of the tank and then calculate the volume of water that will raise the water level by 5cm.
The volume of a rectangular tank can be calculated by multiplying its length, width, and height.
Volume of the tank = length * width * height
Given:
Length = 25cm
Width = 20cm
Height = 30cm
Volume of the tank = 25cm * 20cm * 30cm
Now, let's calculate this:
Volume of the tank = 15000 cubic cm
Since the tank is half-filled, we need to find the volume of water already present in the tank, which is half of the total volume of the tank.
Volume of water already present = 15000 cubic cm / 2
Now, let's calculate this:
Volume of water already present = 7500 cubic cm
To find out how many liters of water will raise the water level by 5cm, we need to find the volume of water that will fill a 5cm high portion of the tank.
Volume of water to raise the water level by 5cm = length * width * 5cm
Volume of water to raise the water level by 5cm = 25cm * 20cm * 5cm
Now, let's calculate this:
Volume of water to raise the water level by 5cm = 2500 cubic cm
To convert cubic cm to liters, we divide the volume by 1000.
Volume of water to raise the water level by 5cm = 2500 cubic cm / 1000
Now, let's calculate this:
Volume of water to raise the water level by 5cm = 2.5 liters
Therefore, to raise the water level in the glass tank by 5cm, we would need approximately 2.5 liters of water.