The area of a parallelogram is base x vertical height.

This can be deduced from the area of a rectangle, which is `A = bh`

Move a triangle from one end of a parallelogram (from T2), and position at the other end (T1). The area of the parallelogram is the same as the area of the rectangle.

Note that it is the *vertical* distance that provides the height.

What is the area of the parallelogram?

Area of a parallelogram is base x vertical height

A = 12 x 5

A = 60

Answer: 60 cm^{2}

A parallelogram has an area of 100 cm^{2}. The vertical height is 5 cm. What is the base length of the parallelogram?

Area = base x vertical height

100 = base x 5

base = 20 cm

Answer: 20 cm

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