18-Warm up 2/26/25

How do you find the surface area of a 3 dimensional object?

• Divide the area of the base by 2 and multiply by the height.
• Divide the sum of the bases and multiply by the height.
• Multiply the sum of all the faces by two.
• Find the sum of all of the areas of all of the faces.

What do we call this object below?

• Net 
• Triangle
• Geometry
• y = mx + b

What figure is this net made up of?

• Cube

• Rectangular Pyramid

• Triangular Pyramid

• Triangular Prism

The formula for the surface area of a cube

• 6s²

• 8x⁹

• 2s⁶

• 6s³

How many faces does this shape have?

• 5

• 6

• 7

• 8

How many vertices does this shape have?

• 5

• 6

• 7

• 8

What shape is this?

• cube

• rectangular prism

How many vertices does this shape have?

• 5

• 6

• 7

• 8

How are cubes and rectangular prisms different?

• They are both 3D shapes.

• Cubes have 6 square faces, not 6 rectangular faces.

• Cubes have lines, and rectangular prisms do not.

• A cube is a 3D shape, and a rectangular prism is a 2D shape.

What is the difference between a cube and a rectangular prism in terms of edges?

• A cube has 12 edges, while a rectangular prism has 8 edges.

• A cube has 8 edges, while a rectangular prism has 12 edges.

• Both have 12 edges.

• Both have 8 edges.