# GCSE Maths

## Area

Area is a very important and commonly asked topic in GCSE maths exam. It is always a good strategy to get a good hold on area concepts for the better understanding of other geometry concepts. here we will discuss are of the following shapes: Triangle, Rectangle, Parallelogram, Trapezium and Circle.

Area is defined as the space covered inside a 2-dimensional closed figure. It is generally measured in m^2 /cm^2/km^2.

When calculating areas remember to make sure that you use the same units of measurement e.g. M and write the correct square unit in your answer e.g. m^2.

**The Areas of Shapes**

**Triangle**

We need to know the base length and height of the opposite vertex from that base:

Area = Base * height.

½ b is half the base length of the triangle and h is the height of the triangle. So you multiply ½ the base length by the height.

**Rectangle**

Area of rectangle can be calculated with the help of length and width.

Area of rectangle = Length * Width.

This means you just multiply the base length by the height.

**Circle**

For area of circle you just need to know the radius of the circle. The formula is given below in the image.

Area = pi*radius*radius.

**Trapezium**

For area of trapezium. We need to know the length of the parallel sides and the height of the trapezium.

Area of trapezium = (1/2)*height*(a+b)

**Parallelogram**

For area of parallelogram we need to know the length of the base and the height from the base to the vertex.

Area = base *height