http://www.ck12.org Chapter 10. Perimeter and Area
Ato p rectangle= 6 · 2 = 12 f t^2
Abottom square= 3 · 3 = 9 f t^2The total area is 12+ 9 = 21 f t^2.
Area of a Parallelogram
Recall that a parallelogram is a quadrilateral whose opposite sides are parallel.
To find the area of a parallelogram, make it into a rectangle.
From this, we see that the area of a parallelogram is the same as the area of a rectangle.
Area of a Parallelogram:The area of a parallelogram isA=bh.
Be careful! The height of a parallelogram is always perpendicular to the base. This means that the sides arenotthe
height.