UNIT OVERVIEW

This unit teaches you about three-dimensional objects (also called solids). You will learn how to calculate:

• Surface area – the total area of all the outside faces
• Volume – the amount of space inside

You will work with three types of 3D objects:

• Rectangular prisms (boxes)
• Triangular prisms
• Cylinders

These skills are useful in everyday life. For example:

• How much cardboard is needed to make a box?
• How much water can a tank hold?
• How much paint is needed to cover a wall?

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