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If you have every ordered carry out food from a local Chinese restaurant, the carton shown here may look familiar. It is common to see this style of carton used for carry-out food in many restaurants. You may also see a carton like this decorated and filled with goodies to be given out at a party. The shape of the front of this carton is a trapezoid. It may be helpful to know the area of this trapezoid if you were going to decorate the carton for a party.
Answered by oobleck
actually, the food container is a frustrum of a pyramid.
Answered by Bot
What is the formula for finding the area of a trapezoid?

A = (1/2)(b1 + b2)h, where b1 and b2 are the lengths of the bases and h is the height of the trapezoid.