Adding-And-Subtracting-Areas Edexcel Higher

Take a moment to think about how to split up the shape into the easiest shapes possible – there will probably be more than one way to do it!

Find the area of the pentagon shown in the diagram below.

Separate the diagram into two shapes that you are familiar with and know the area formulae for
This pentagon can easily be split into a rectangle and a triangle

Use the values given to find the length of the base and the height of the triangle and add these to the diagram. 

The total area will be the area of the rectangle + the area of the triangle.

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