Surface Area and Volume of Prisms

This video tutorial covers the seventh-grade concept of surface area, focusing on a triangular prism. The teacher guides students through calculating the surface area by examining the net of the prism, which includes rectangles and triangles. The video uses a problem from the 2019 Texas STAAR test to illustrate the process, emphasizing the use of base and height in area calculations. Students are encouraged to pause the video to solve the problem independently before reviewing the solution together.

What is the main topic discussed in this video tutorial?

• Area of a circle

• Perimeter of a rectangle

• Surface area of a triangular prism

• Volume of a cube

What does the 'net' of a triangular prism refer to?

• The weight of the prism

• The volume of the prism

• The unfolded 2D shape of the prism

• The height of the prism

How many faces does a triangular prism have?

• Six

• Three

• Four

• Five

What is the formula for the area of a rectangle?

• Base minus height

• Base divided by height

• Base plus height

• Base times height

What is the base length of the first rectangle in the net?

• 1.5 cm

• 3.5 cm

• 4.5 cm

• 2.5 cm

What is the formula for the area of a triangle?

• Base minus height

• Base times height

• Base plus height

• One half base times height

What is the base length of the triangle in the net?

• 4 cm

• 1 cm

• 2 cm

• 3 cm

What is the height of the triangle in the net?

• 1 cm

• 3 cm

• 4 cm

• 2 cm

What is the total surface area of the triangular prism?

• 14 cm²

• 12 cm²

• 16 cm²

• 10 cm²

Which of the following is the correct total surface area calculation?

• 4 + 4 + 4 + 4 + 4

• 2.5 + 2.5 + 2.5 + 2.5 + 2.5

• 3 + 3 + 2.5 + 2.5 + 3

• 3 + 3 + 3 + 3 + 3