Learn about perimeters and how to calculate the perimeter of a simple shape with this BBC Bitesize Maths article. For students between the ages of 11 and 14. Area of squares, rectangles and ...

The area of a kite is found in the same way as a rhombus, that is by splitting it into two triangles.

So how could an old school draftsman figure out the area of complex shapes ... So, the planimeter isn’t just measuring the length of the perimeter, but the size of the perimeter.