Composite Shapes and Area Calculations

The video tutorial teaches students how to find the area of composite shapes, which are made up of multiple polygons. It covers three examples: using rectangles, applying the trapezoid formula, and employing the subtraction method. Each example is explained step-by-step, with emphasis on labeling, using formulas, and checking calculations. The tutorial encourages students to pause and try solving problems independently before checking their answers.

What is another name for composite shapes?

• Simple shapes

• Complex shapes

• Polygons

• Irregular shapes

Which worksheet corresponds to the lesson on composite shapes?

• Worksheet E13

• Worksheet E12

• Worksheet E10

• Worksheet E11

In Example 1, what is the area of Rectangle A?

• 18 square meters

• 20 square meters

• 22 square meters

• 24 square meters

How do you find the missing length in Rectangle B?

• Multiply 2 by 3.8

• Divide 3.8 by 2

• Add 2 to 3.8

• Subtract 2 from 3.8

What is the total area of the composite shape in Example 1?

• 42.3 square meters

• 40.5 square meters

• 41.7 square meters

• 39.8 square meters

In Example 2, what shape is used to simplify the area calculation?

• Trapezoid

• Triangle

• Rectangle

• Circle

What is the formula for the area of a trapezoid?

• Base one plus base two times height divided by two

• Base one times base two divided by height

• Base plus height divided by two

• Base times height

What is the total area of the trapezoid in Example 2?

• 500 square centimeters

• 550 square centimeters

• 520 square centimeters

• 528 square centimeters

In Example 3, what method is used to find the area of the composite shape?

• Addition

• Division

• Multiplication

• Subtraction

What is the area of the triangle subtracted in Example 3?

• 3 square meters

• 4 square meters

• 5 square meters

• 6 square meters