So you have a circle. What is the area of that circle? Surely everyone remembers that the area of a circle is: Where Pi (π) is of course the number and r is the radius of the circle. Where does this ...

Microsoft Excel is a powerful spreadsheet program which you can use to graph functions, including functions that produce curves. One limitation of Excel is that it doesn't have a built in function to ...

A horizontal line means the object is moving at a constant speed. The gradient of the line = the rate of change of speed. The steeper the line, the greater the increase in speed. The area under the ...