Areas of Simple Geometric Figures Area The area of a figure is the number of square units the figure encloses. Area of a Rectangle Area of a Rectangle Area of a Square Area of a Parallelogram Area of a Triangle Area of Trapezoids Area of Circles 3/6 mi 1.2 cm 3.4 cm 1/4 mi 2.5 in 2 cm 3/4 m 1.4 cm 1 1/2 m 3.5 cm