Euler found four whole numbers such that the sum of any two of the numbers is a perfect square...
The diagram illustrates the formula: 1 + 3 + 5 + ... + (2n - 1) = n² Use the diagram to show that any odd number is the difference of two squares.
How much peel does an apple have?
Start with a diagram of a cube just passing under a ribbon.
And maybe put the cube exactly in the middle, just to start
Next choose a size for the cube, any size, and calculate how
long the ribbon would be if that was the biggest cube that would
Was it 104 cm ? Adjust the cube size and try again ?