Finding the Missing Side Length of a Rectangle

The video tutorial teaches how to find the missing side length of a rectangle by dividing its area. It begins with a problem involving painting stripes on a cafeteria wall, explaining the concept of area and addressing common misconceptions. The tutorial then solves the wall problem by calculating the number of stripes needed. Another example is provided with curtains, demonstrating how to find the width using the area. The lesson concludes by summarizing the method of finding missing side lengths through division.

What is the area of a rectangle that measures 2 feet by 8 feet?

• 20 square feet

• 12 square feet

• 16 square feet

• 10 square feet

If a wall is 9 feet high and covers 36 square feet, how many 1-foot-wide stripes can be painted on it?

• 5 stripes

• 3 stripes

• 6 stripes

• 4 stripes

What is the missing side length of a rectangle if the area is 36 square feet and one side is 9 feet?

• 6 feet

• 3 feet

• 4 feet

• 5 feet

How wide is each curtain if it covers 30 square feet and the window is 5 feet tall?

• 7 feet

• 6 feet

• 5 feet

• 4 feet

What equation would you use to find the width of a curtain if the area is 30 square feet and the height is 5 feet?

• 30 = 5 x width

• 30 = 5 - width

• 30 = 5 + width

• 30 = 5 / width