Surface Area and Rectangular Prisms

This video tutorial guides viewers through solving a real-world problem by calculating the surface area of rectangular prisms. It begins with an introduction to the concept of surface area, followed by a word problem involving cereal boxes. The video provides a detailed explanation of how to calculate the surface area of the boxes and uses estimation to determine how many boxes can be produced with the remaining cardboard. The tutorial concludes with a summary of the problem-solving process.

What is the surface area of a 3D solid?

• The volume of the solid

• The weight of the solid

• The sum of the areas of its faces

• The length of its edges

How many sizes of faces does a rectangular prism have?

• Two

• Three

• One

• Four

What is the main problem the cereal box factory is facing?

• Machine malfunction

• Limited cardboard supply

• Insufficient cereal

• Lack of workers

What is the first step in calculating the surface area of the cereal box?

• Finding the volume

• Calculating the area of the smallest rectangle

• Measuring the height

• Counting the number of boxes

What are the dimensions of the smallest rectangle on the cereal box?

• 4 inches by 8 inches

• 2 inches by 10 inches

• 6 inches by 10 inches

• 2 inches by 6 inches

How do you calculate the area of the medium rectangle?

• Multiply the width and height

• Divide the total area by two

• Add all side lengths

• Multiply the smallest and largest lengths

What is the total surface area of the cereal box?

• 184 inches squared

• 220 inches squared

• 150 inches squared

• 200 inches squared

How many more cereal boxes can be produced with the remaining cardboard?

• 4

• 6

• 3

• 5

What estimation technique is used to solve the problem quickly?

• Ignoring decimals

• Rounding down

• Rounding up

• Using exact numbers

What is the significance of the number 1000 in the problem?

• It is the weight of the cardboard

• It is the remaining cardboard in square inches

• It is the total area of the factory

• It is the number of boxes produced