Lesson 11 of 15
Which count is the job asking for
Show on a big screenA courtyard, an open floor, needs tiling. A roof tank needs filling. Both are 4 units along a side.
Step 1 of 3
- A flat patch, 4 tiles across: 16.
- A filled space, 4 blocks deep too: 64.
- Same side, two different counts.
Rule: Covering a square patch wants side times side. Filling a cube-shaped space wants side times side times side.
- Tiles on a square floor cover a square patch.
- A cube-shaped tank or crate is a space to fill.
Watch out!
The word "square" in a job does not decide. A box of square barfi is being filled, not covered. So count in three directions: across, deep and high.
Pick a job. Slide its side. Switch to the count it needs.
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Try the lab to finish this lesson.