Polygon Area from Rectangles

Look at the figure below.  What method could be used to find the area of the two-dimensional figure?

• Find the area of the trapezoid, find the area of the rectangle, and then subtract the areas.

• Find the area of the trapezoid, find the area of the rectangle, and then multiply the areas.

• Find the area of the trapezoid, find the area of the rectangle, and then divide the areas.

• Find the area of the trapezoid, find the area of the rectangle, and then add the areas.

What is the area of the shaded region?

• 14 m²

• 120 m²

• 106 m²

• 134 m²

Find the area of the composite figure

• 40

• 9

• 49

• 61

The ratio of the perimeters of 2 similar rectangles is 2 to 3. What is the ratio of their areas?

The ratio of the perimeters of 2 similar rectangles is 4 to 7. The area of the larger rectangle is 441 square feet. What is the area of the smaller rectangle?

• 252

• 144

• 1350.6

• 14553

What is the area ratio of the following rectangles?

• 7/10

• 49/100

• 36/100

• 36/4

What is the area of the shaded region?

• 4 cm²

• 16 cm²

• 8 cm²

• 12 cm²

What is the area of a rectangle with length a and width b?

• a + b

• ab

• a²

• b²

What polygon is used in the Riemann sum?

• trapezoid

• triangle

• rectangle

• rhombus