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?
As an example of how you might begin, take one litre as the
How many cubic centimetres is that ?
And how long would the 'slope length' be in each case ?
How do you calculate the curved surface area using those things
Can you refine your answer with more precise values tried for
the radius length ?