Calculating Area and Perimeter

In this video, Mr. Jay explains how to find the perimeter and area of a composite L-shaped figure. The process involves identifying and calculating missing side lengths to determine the perimeter, followed by dividing the shape into simpler rectangles to calculate the area. The video provides a step-by-step guide to ensure accurate calculations, emphasizing the importance of using correct side lengths for each calculation. The tutorial concludes with a summary of the methods used to find both the perimeter and area.

What is the first step in finding the perimeter of a composite shape?

• Divide the shape into simpler shapes

• Identify and calculate any missing side lengths

• Calculate the area of the shape

• Multiply the length by the width

How do you find the missing vertical side length if one side is 4 feet and the total is 11 feet?

• Multiply 4 by 11

• Add 4 to 11

• Divide 11 by 4

• Subtract 4 from 11

What is the perimeter of the L-shaped figure in the example?

• 56 feet

• 98 feet

• 50 feet

• 42 feet

What is the area of a shape?

• The amount of space or surface inside a shape

• The sum of all side lengths

• The length of the longest side of a shape

• The distance around the outside of a shape

How can you find the area of a composite shape?

• By subtracting the perimeter from the area

• By dividing the shape into simpler shapes and adding their areas

• By adding all the side lengths

• By multiplying the perimeter by the width

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

• Length divided by width

• Length minus width

• Length plus width

• Length times width

What are the dimensions of rectangle A in the example?

• 14 by 4

• 7 by 6

• 8 by 6

• 11 by 4

What is the area of rectangle B in the example?

• 50 square feet

• 98 square feet

• 56 square feet

• 42 square feet

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

• 42 square feet

• 50 square feet

• 56 square feet

• 98 square feet

What is the final step in finding the area of a composite shape?

• Multiply the areas of the simpler shapes

• Divide the total area by the number of shapes

• Subtract the smaller area from the larger area

• Add the areas of the simpler shapes together