Nurul's craft box has a square base of side 7 cm. Its volume is 686 cm³. What is the height of the box?
- 14 cm
- 49 cm
- 98 cm
- 686 cm
Need a hint?
Find the area of the square base first, then use the volume formula.
Worked answer
- The square base area is 7 cm × 7 cm = 49 cm².
- Volume = base area × height.
- Height = 686 cm³ ÷ 49 cm² = 14 cm.
Answer: 14 cm
The mistake this question tests
Habit
Left out the units
A pupil may divide 686 cm³ by only one side length and obtain 98 cm. The volume must be divided by the whole base area.
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