Area and Dimensions of Rectangles

The video tutorial explains how to find the area of a composite figure by dividing it into two rectangles, A and B. It details the process of calculating the area of each rectangle by multiplying their respective lengths and widths. Rectangle A has a length of 20 cm and a width of 8 cm, resulting in an area of 160 cm². Rectangle B's dimensions are determined by subtracting the length of line QR from line PU, giving a length of 7 cm and a width of 6 cm, resulting in an area of 42 cm². The total area of the figure is the sum of the areas of rectangles A and B, which equals 202 cm².

What is the first step in finding the area of the composite figure?

• Divide the figure into two rectangles.

• Measure the angles of the figure.

• Calculate the perimeter of the figure.

• Find the volume of the figure.

How do you calculate the area of a rectangle?

• Subtract the width from the length.

• Multiply the length by the width.

• Divide the length by the width.

• Add the length and width.

What are the dimensions of rectangle A?

• Length: 20 cm, Width: 6 cm

• Length: 7 cm, Width: 6 cm

• Length: 13 cm, Width: 8 cm

• Length: 20 cm, Width: 8 cm

How is the length of rectangle B determined?

• By adding the lengths of lines St and QR.

• By using the width of rectangle A.

• By subtracting the length of line QR from line PU.

• By measuring the diagonal of rectangle B.

What is the area of rectangle B?

• 42 cm²

• 160 cm²

• 202 cm²

• 56 cm²

What is the total area of the composite figure?

• 180 cm²

• 42 cm²

• 202 cm²

• 160 cm²