1-7 Surface Area of a Prism

1-7 Surface Area of a Prism

Introduced in Lesson 43

Which one does not belong? Be prepared to explain why.

Learning & Habit Objective

Learning: I will calculate the surface area of a prism

Habit: I will write organized steps to show my thinking

Success Criteria

• I understand the meaning of surface area

• I understand the parts of the formula SA=2B+PH

• I can calculate the surface area of a prism using the formula and organized steps

What do we mean by surface area?

The surface area of a 3-D solid is the sum of the areas of its faces. Think: wrapping paper.

Since we are summing areas, the units for surface area are to the power of 2: m², in², cm²,...

The flattened out 3-D solid is called a net and can help us visualize the faces.

Notebook: The Formula SA=2B+PH

SA is surface area, B is area of one base, P is perimeter of one base, and H is height or altitude.

The next slides will guide you through finding the surface area. Write down every step in your notebook.

Fill in the Blank

B = _____ cm²

Fill in the Blank

P = _____ cm

Fill in the Blank

H = _____ cm

Fill in the Blank

Now put it all together to find the surface area: SA=2B+PH

SA = _____ cm² (just give the number)

Open Ended

Exit Ticket: Find the surface area of this prism. Type your steps. Be sure to show your values for B, P and H as well as your answer for surface area.