Question 36
MediumOriginal questionRain falls to a depth of 2 cm on a flat roof 22 m long and 20 m wide, and all of it runs into a tank. How many litres of water reach the tank? (1 litres)
Show the answer and explanation
CorrectNot quiteAnswer D
Correct answer: D
Explanation
Depth of rain = 2 cm = 0.02 m.
Volume = m³.
8.8 litres.
Worth noting
4,400 litres uses 1 cm. 880 and 88 litres slip a zero or two in the conversion: 2 cm = 0.02 m and 1 litres.
- Concept
- Rainfall volume = area × depth
- Typical timeTypical
- 70 s
- Your timeYours
- —
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Ten questions from Mensuration: Areas and Volumes, at your own pace.