Finding Area of Irregular Shapes

This video tutorial explains how to find the area of an irregular shape by dividing it into smaller rectangles. It begins with an introduction to the concept of area and the challenge of dealing with complex shapes. The tutorial then demonstrates how to break down the shape into simpler rectangles, calculate the area of each, and sum these areas to find the total area of the original shape. The example used involves a shape with sides of 6 cm, 7 cm, 4 cm, and 2 cm, which is divided into two rectangles. The areas of these rectangles are calculated and added together to find the total area of 30 square cm.

What is the primary goal when finding the area of a shape?

• To determine the perimeter of the shape

• To find the amount of flat space it occupies

• To calculate the volume of the shape

• To measure the height of the shape

What is a simple method to find the area of a rectangle?

• Multiply the side lengths

• Add the side lengths

• Divide the side lengths

• Subtract the side lengths

What challenge arises when dealing with irregular shapes?

• They have no sides

• They cannot be easily divided into smaller rectangles

• They have too many sides

• They are always circular

In the example, what are the side lengths of the first rectangle?

• 6 cm and 2 cm

• 4 cm and 7 cm

• 7 cm and 3 cm

• 4 cm and 6 cm

How do you determine the missing side length of the second rectangle?

• By subtracting the known part from the total length

• By measuring directly

• By adding the known part to the total length

• By guessing

What is the area of the second rectangle in the example?

• 12 square cm

• 8 square cm

• 6 square cm

• 10 square cm

What is the final step in finding the area of the irregular shape?

• Add the areas of the smaller rectangles

• Multiply the areas of the smaller rectangles

• Divide the areas of the smaller rectangles

• Subtract the areas of the smaller rectangles

What is the total area of the irregular shape in the example?

• 32 square cm

• 34 square cm

• 30 square cm

• 28 square cm