Find the density of the sand. If it is more than 48000/942 = 50.96 pounds per cubic inch, then it will fit.
Alternatively, if "pound" is a measure of weight, place the container on a neutron star. On the surface of a neutron star, a spoonful of matter weighs tons!
48000 cc
1 gallon = 231 cubic inches = 231/1,728 cubic ft5 gallons = 5 x 231 / 1,728 cubic ftThe weight of water varies with temperature. At normal comfortable temperatures,it's around 62.4 pounds per cubic ft.Weight of 5 gallons = 5 x 231 x 62.4 / 1,728 = 41.7083 pounds (rounded), minus the weight of the container.
48,000 cubic feet is about 359,065 US gallons of water.
If you mean a container with a volume of 1 cubic foot, then: 1/4 inch ball = 0.0082 cu. inch weigh of each ball (steel) = 0.0023 pounds approx. 73.6 balls per cubic inch (allowing for spherical interlocking) 1728 cubic inches ( one cubic foot) x 73.6 x 0.0023 = 292 pounds. So a cu. ft. container will hold close to 300 pounds of quarter inch steel balls.
135mL equates to 135 cubic centimeters (cc) or0.135 cubic decimeters.
The volume is 60*40*20 = 48000 cubic centimetres.
Cubic foot
6.25 Imperial gallons to the cubic foot 6.25 divided into 48000 would give you 7680 square feet of water. so you could soak a football field
1 cubic meter = 1,000 liters. That volume of pure water at standard temperature weighs 980 newtons (220.46 pounds). (rounded) We have no way of knowing the weight of the container.
That would be very difficult to determine. The experiment could never be set up and conducted, since there is no such thing as a "cubed square foot". If you meant to say cubic foot, then here is a way to determine it. You will need golf tees that will sink in water, plus a container holding 2 cubic feet, with a mark at the one cubic foot level. Fill the container with water to the one cubic foot level. Start dropping in the golf tees until the water level is at the top, or two cubic feet. Count how many golf tees you put into the container to get your answer.
Assuming the container is full at 1500 liters, the container's volume in cubic feet will be about 53 cubic feet (52.9720005, more precisely).
7" x 7" x 6' = 2.042 cubic feetAt 62.5 lbs/ft3 , that's 127.6 lbs in water.Such a container will float (127.6 pounds minus the weight of the container) in water.