Surface Area With and Without Nets

Surface Area With and Without Nets

Surface area: the sum of the area of all its faces

Multiple Choice

What is surface area?

• Where the base of a triangle and rectangles are put together

• The sum of the area of all of the faces in a 3-Dimmensional figure

• How would I know?!?

• Where you do length x width x height

Surface Area of Nets

• Every face has a twin!

• Top/Bottom: 50 cm²

• Left/Right: 15 cm²

• Front/Back: 30 cm²

Multiple Choice

What is the area of the front/back? (The orange letters)

• 20 cm²

• 12 cm²

• 25 cm²

• 16 cm²

Multiple Choice

What is the area of the left/right? (The green letters)

• 20 cm²

• 25 cm²

• 15 cm²

• 9 cm²

Multiple Choice

What is the area of the top/bottom? (the yellow letters)

• 16 cm²

• 15 cm²

• 12 cm²

• 9 cm²

Fill in the Blanks

Multiple Choice

What is the area of the front/back? (The orange F/B)

• 128 cm²

• 84 cm²

• 48 cm²

• 96 cm²

Multiple Choice

What is the area of the top/bottom? (The yellow T/B)

• 128 cm²

• 84 cm²

• 48 cm²

• 96 cm²

Multiple Choice

What is the area of the left/right? (The green L/R)

• 128 cm²

• 84 cm²

• 48 cm²

• 96 cm²

Fill in the Blanks

Fill in the Blanks

Surface Area of Triangular Prisms

• Triangular Prisms: 5 faces

• 3 Rectangles & 2 Triangles

• Triangles have the same area

• At least 2 of the rectangles have the same area

Multiple Choice

What is the area of each triangle?

• 48 cm²

• 24 cm²

• 80 cm²

• 40 cm²

Multiple Choice

What is the area of each rectangle?

• 48 cm²

• 170 cm²

• 68 cm²

• 136 cm²

Fill in the Blanks

Fill in the Blanks

Surface Area Without Nets

• You simply need to remember what shapes the prisms are made of:

• Rectangular Prism: Front/Back, Top/Bottom, Left/Right

• Triangular Prism: 2 Triangles & 3 Rectangles

Multiple Choice

What is the surface area of the rectangular prism? (Use the format below to help you)

Top

Bottom:

Left:

Right:

Front:

Back:

• 100 cm²

• 50 cm²

• 88 cm²

• 126 cm²

Multiple Choice

What is the surface area of the rectangular prism? (Use the format below to help you)

Top

Bottom:

Left:

Right:

Front:

Back:

• 100 cm²

• 198 cm²

• 99 cm²

• 135 cm²

Multiple Choice

What is the surface area of the triangular prism? (Use the format below to help you)

Triangle:

Triangle:

Rectangle:

Rectangle:

Rectangle:

• 145 cm²

• 312 cm²

• 288 cm²

• 144 cm²

Poll

On a scale of 1-5 how confident are you on finding surface area? (1 being the least confident and 5 being the most confident)

• 1

• 2

• 3

• 4

• 5