How meny 4x4x8 air pillows are needed to (=) 465 qubic ft.of air, or ping-pong balls to do the same ?

Answer 1

Also, are the air pillows neatly arranged or randomly placed? If the 'box' to hold the air pillows measures 1x1x465, then none of the air pillows will fit if fully inflated. If the box is 4x4x29.0625, then three air pillows will fit leaving a space behind that is 5.0625x4x4. For a box 4x8x14.53125, again three air pillows will fit leaving a 4x8x2.53125 space (81 cubic feet).

Best case is that 3 air pillows will fit, worst cast is none. Since ping pong balls are round the calculation for them is completely different. They can orient themselves differently.

Answer 2

Each 4 X 4 X 8 air pillow holds 4*4*8 = 128 cu. ft. of air. So, to hold 465 cu. ft. would require 465/128 = 3.633.

Can't say anything about the ping-pong balls because I have no idea what their size is ☺


Doug