Understanding Area with Rectilinear Figures

What is the formula for calculating the area of a rectangle?

• Length times width

• Length plus width

• Length divided by width

• Length minus width

How do you find the total area of a rectilinear figure?

• By adding the perimeters of the shapes

• By multiplying the areas of the shapes

• By decomposing the figure into simpler shapes and adding their areas

• By subtracting the smaller area from the larger area

In the example given, what is the area of the top shape with a length of 4 units and a width of 2 units?

• 8 square units

• 12 square units

• 6 square units

• 10 square units

What is the total area of a rectilinear figure if the areas of the decomposed shapes are 90 square inches and 25 square feet?

• 115 square centimeters

• 115 square inches

• 115 square feet

• 115 square meters

How do you determine the length of a shape if the total length is 15 inches and one part is 10 inches?

• Subtract 10 inches from 15 inches

• Multiply 10 inches by 15 inches

• Add 10 inches to 15 inches

• Divide 15 inches by 10 inches