Calculating Perimeter and Area of Rectangles

The video tutorial covers solving geometry problems involving calculating dimensions, perimeters, and areas of various shapes such as pools, posters, and rugs. It emphasizes understanding the relationships between length, width, and area, and how doubling dimensions affects perimeter and area.

What is the main purpose of the homework session as described in the introduction?

• To avoid doing it

• To finish quickly

• To learn a lot from it

• To make students suffer

If a pool is 7 feet wide and three times as long, what is its length?

• 35 feet

• 28 feet

• 14 feet

• 21 feet

How do you calculate the perimeter of a rectangle?

• Length times width

• Length plus width

• Twice the length plus the width

• Twice the sum of length and width

A poster is 3 inches long and four times as wide. What is its width?

• 6 inches

• 9 inches

• 12 inches

• 15 inches

What is the perimeter of a poster that is 3 inches long and 12 inches wide?

• 48 inches

• 36 inches

• 30 inches

• 24 inches

How do you find the area of a rectangle?

• Subtract the width from the length

• Add the length and width

• Multiply the length by the width

• Divide the length by the width

Given a rectangle with an area of 36 square cm and a length of 9 cm, what is the width?

• 4 cm

• 2 cm

• 5 cm

• 3 cm

If a second rectangle is the same length but three times as wide as the first, what is its width if the first is 4 cm wide?

• 16 cm

• 12 cm

• 10 cm

• 8 cm

What is the perimeter of a rectangle that is 9 cm by 12 cm?

• 42 cm

• 36 cm

• 48 cm

• 30 cm

Nathan's bedroom rug is 3 feet by 5 feet. What is its perimeter?

• 20 feet

• 16 feet

• 18 feet

• 24 feet