Understanding the Area of an L-Shaped Polygon

The video tutorial explains how to calculate the area of an L-shaped polygon by dividing it into two rectangles. The instructor demonstrates the process of finding the area of each rectangle using the formula 'area = length x width'. The missing length of one side is calculated by subtracting known lengths. The areas of the two rectangles are then summed to find the total area of the L-shaped polygon, resulting in 64.65 square centimeters.

What is the first step in finding the area of the L-shaped polygon?

• Find the diagonal length

• Divide it into two triangles

• Divide it into two rectangles

• Calculate the perimeter

What formula is used to calculate the area of a rectangle?

• Area = length - width

• Area = length + width

• Area = length / width

• Area = length x width

How do you find the missing side length of Region 2?

• Add the known lengths

• Divide the total length by the known length

• Multiply the known lengths

• Subtract the known length from the total length

What is the length of the missing side in Region 2?

• 3.6 cm

• 5.1 cm

• 10.7 cm

• 8.7 cm

How many decimal places should the product of two numbers with one decimal place each have?

• Three

• Two

• One

• Four

What is the area of Region 1?

• 18.08 cm²

• 15.08 cm²

• 12.08 cm²

• 10.08 cm²

What is the area of Region 2?

• 52.57 cm²

• 56.57 cm²

• 50.57 cm²

• 54.57 cm²

What is the total area of the L-shaped polygon?

• 64.65 cm²

• 66.65 cm²

• 62.65 cm²

• 60.65 cm²

What does the total area of the L-shaped polygon represent?

• The number of square inches that fit inside

• The number of square feet that fit inside

• The number of square centimeters that fit inside

• The number of square meters that fit inside

Why is it important to move the decimal point in the product?

• To increase the value

• To ensure the correct number of decimal places

• To make the calculation easier

• To decrease the value