How Do You Find the Area of a Trapezoid?


Quick Answer

Calculate the area of a trapezoid by identifying the length of the two parallel bases and the height of the polygon. Then, use the formula A = a + b/2 (h), where "a" and "b" are the two parallel base lengths and "h" refers to the height of the polygon.

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Full Answer

For example, consider Trapezoid G with base lengths of 8 and 10 inches and a height of 4 inches. Using the formula, add the length of the two bases, divide the sum by two and multiply the figure by four to determine that the area of Trapezoid G is 36 square inches [(8 + 10)/2(4)].

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