Perimeter and Area of Rectangles

The video tutorial explains how to find and simplify expressions for the perimeter and area of a rectangle. It covers the process of adding side lengths to find the perimeter and using substitution to calculate the actual perimeter when a value for x is given. The tutorial also explains how to calculate the area using the distributive property and substitution to find the actual area.

What is the expression for the perimeter of a rectangle if the length is 3x + 1 and the width is 2x?

• 3x + 2x

• 3x + 1 + 2x

• 2(3x + 1) + 2(2x)

• 3x + 1 + 2x + 3x + 1 + 2x

How do you find the perimeter of a rectangle?

• Divide the length by the width

• Subtract the width from the length

• Add all the sides together

• Multiply the length by the width

What is the simplified expression for the perimeter of the rectangle?

• 10x + 2

• 5x + 2

• 5x + 1

• 10x + 1

If x = 3 cm, what is the actual perimeter of the rectangle?

• 34 cm

• 28 cm

• 32 cm

• 30 cm

What is the formula for the area of a rectangle?

• Length - Width

• Length + Width

• Length x Width

• 2(Length + Width)

How do you apply the distributive property to find the area of the rectangle?

• Multiply each term in the length by the width

• Subtract the width from the length

• Multiply the length by the width

• Add the length and width

If x = 3 cm, what is the actual area of the rectangle?

• 72 cm²

• 66 cm²

• 60 cm²

• 54 cm²