Understanding Surface Area

What does the surface area of a 3D object represent?

• The total volume inside the object

• The total area of all the object's faces

• The length of the object

• The weight of the object

What is a net in the context of surface area?

• A mathematical operation

• A 2D representation of a 3D object

• A type of graph

• A tool for catching fish

Why do we not consider the volume when calculating surface area?

• Because they are the same measurement

• Because volume calculations are too complex

• Because volume is always larger than surface area

• Because surface area only concerns the outer layer

What is the formula for calculating the surface area of a rectangular prism?

• SA = 2πrh + 2πr²

• SA = πr²h

• SA = 2lw + 2lh + 2wh

• SA = lwh

What does the 'l' represent in the surface area formula for rectangular prisms?

• Length

• Width

• Height

• Volume

How do you calculate the surface area of a cylinder?

• SA = 2lw + 2lh + 2wh

• SA = lwh

• SA = 2πrh + 2πr²

• SA = πr²h

In the formula for the surface area of a cylinder, what does 'r' stand for?

• Revolution

• Rectangle

• Range

• Radius

How do you find the radius from the diameter?

• Multiply the diameter by 2

• Divide the diameter by 2

• Square the diameter

• Subtract 2 from the diameter

Which object would be less expensive to manufacture based on surface area?

• A can with more surface area

• A box with less surface area

• A can with less surface area

• A box with more surface area

What unit is used to measure surface area?

• Cubic units

• Linear units

• Kilograms

• Square units