Open Middle®
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to give the cylinder the maximum volume possible.
Hint
Which dimension has a bigger impact on the volume? (Diameter or Height)
Answer
Height = 86
Diameter = 97 –> Radius = 48.5
Diameter = 97 –> Radius = 48.5
Volume ~= 635,524 cubic units (6.36 x 10^5)
Source: Kyle Leinweber