sstrike's answer to crxrries's Primary 6 Maths Singapore question.
Hi why do you use (87-1.8) ?
87 is the total height as stacked in the left
Similar as left
The cup base height is 1.8
↓
87-1.8 → all cup body height
Similar as left
The cup base height is 1.8
↓
87-1.8 → all cup body height
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