Area, in simple words, is the surface size of a given shape. Again, there are a few formulae you need to learn at the basic level. Harder questions give you multiple shapes combined together to work out part of an area in it.
- Area of circle: πr2
- Area of semi-circle: 1/2πr2
- Area of square: side2
- Area of rectangle: length × width
- Area of triangle: 1/2 × base × height
- Area of cylinder: 2πrh + 2πr2
- Area of sphere: 4πr2
Calculate the areas of the following shapes.