I need help understanding how to calculate the area of a trapezoid. Could you provide an example with a base1 of 10 cm, base2 of 15 cm, and a height of 5 cm? Your answer must contain a title, wrapped in double angular brackets, such as <<How to Calculate the Area of a Trapezoid>>. Highlight at least 2 sections in your answer with markdown, i.e. *highlighted section*. Your response should contain at least 3 sentences.
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