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 ...

Volume is the amount of space occupied by a solid, liquid or a shape. Let’s find the volume of a shape. The formula for calculating the volume of a cuboid is: Volume = length × width × height Or you ...

The circumference of a circle is the distance around the shape. The ability to round a number to a number of decimal places or to a number of significant figures means that answers can be written to ...