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Mathematics 13 Online
OpenStudy (anonymous):

Please help! Explain how the formula for the area of a parallelogram is derived from that of a rectangle.

OpenStudy (mathteacher1729):

Think of a deck of cards. There are 52 cards whether the deck is straight or tilted. |dw:1342900411296:dw|

OpenStudy (anonymous):

I don't really understand

OpenStudy (anonymous):

|dw:1342901615454:dw| A=xl+2(0.5al)

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