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# What Is the Area of a Trapezoid?

**The area of a trapezoid is found by multiplying the average length of the two parallel bases by the height, or 1/2 (b1 + b2) x h.** The height is the length of a line connecting one base to the other at a 90-degree angle.

A trapezoid is defined in the United States and Canada as a four-sided convex polygon with at least one pair of parallel sides. The same shape is called a trapezium outside of North America. In American and Canadian English, the word trapezium means a four-sided polygon with no parallel sides, also called an irregular quadrilateral. There is no simple formula for finding the volume of an irregular quadrilateral.

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## How Do You Find the Area of a Rectangular Prism?

A: To find the surface area of a rectangular prism, find its length, width and height. Multiply width times height, length times width, and length times heigh... Full Answer >Filed Under: -
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## How Do You Find the Area of a Triangular Prism?

A: Multiply the length of each side of the triangle by the depth of the prism separately, then multiply the base of the triangle by its height. Add these four... Full Answer >Filed Under: -
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## How Do You Find the Surface Area of a Pyramid?

A: The surface area of a right square pyramid is determined by adding the square of the length of the base to four times the quotient of the base length times... Full Answer >Filed Under: -
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## How Is the Volume of an Ellipsoid Calculated?

A: To determine the volume of an ellipsoid, the object's length must first be multiplied by its width and then by its height, followed by a final multiplicati... Full Answer >Filed Under: