The video tutorial explains how to calculate the surface area of a composite shape consisting of a rectangular prism and a triangular prism. It discusses two methods: calculating each shape separately and subtracting overlapping areas, or listing all shapes and adding their areas. The tutorial provides a detailed step-by-step calculation for each shape, including the use of the Pythagorean theorem for complex parts. The final surface area is verified, and the importance of organization in mathematical calculations is emphasized.

What are the two main approaches discussed for calculating the surface area of the composite shape?

• Calculate each shape separately and subtract the hidden parts.

• List all shapes and add their areas without subtracting.

• Use a single formula for the entire shape.

• Estimate the area by visual inspection.

How many sides does the top triangular prism have?

• Four

• Three

• Six

• Five

Which side of the rectangular prism is not included in the surface area calculation?

• The top side

• The bottom side

• The front side

• The back side

What is the formula used to calculate the area of a rectangle?

• Length plus width

• Length times width

• Base times height

• Base times height divided by two

What is the area of the bottom rectangle of the rectangular prism?

• 450

• 600

• 150

• 300

Which mathematical theorem is used to find the slant height of the triangular face?

• Volume theorem

• Pythagorean theorem

• Area theorem

• Trigonometric theorem

What is the calculated area of the slanty rectangle (side seven) in the triangular prism?

• 450

• 474

• 150

• 300

What is the base length of the triangular face in the triangular prism?

• 30

• 20

• 15

• 10

What is the total surface area of the composite shape?

• 3,100 cm²

• 3,000 cm²

• 3,174 cm²

• 3,200 cm²

What is the unit of measurement for the surface area in this problem?

• Square inches

• Square meters

• Square centimeters

• Square feet