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Area of Parallelogram Lesson 16.3

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Area Area is the amount of space inside a figure. We use square units to describe area. For rectangles, the area formula is A=lw (area equals length times width). For squares, the formula is still A=lw. However, since every side of a square is the same, then it can also be expressed as A=s2 where s equals the length of one side.

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**Example A=lw A=12(8) A=96 sq. m 12 m 8 m**

Area is expressed in square units. It can be written (in this case) as 96 sq. m or 96 m2.

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**Area of Irregular Shapes**

Count how many squares are completely covered by the shape. Put partial squares together to make wholes. 13 squares are full. 2 squares are almost full, and they can be matched up with 2 squares that are almost empty. 3 squares are about half full – when two are put together that makes a full square. The half square is left over. Altogether, there are 16 and a half squares full.

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Area of Parallelogram A = bh 1.5 × 2 = 1.5 in. 2 in. 2 in.

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Practice Time

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