3. Find the volume in dm (and, therefore, in litres) of each of the cubes whose side is
(i) 1.7 cm
(ii) 23 cm
(iii) 1 dm 5 cm
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Answer:
1 cm = 0.1 dm
1 m³ = 1000 lires
1 dm³ = 1 litre
(i) Volume = (1.7 cm)³
= (0.17 dm)³ = 0.004913 dm³
Volume = 0.004913 dm³
Volume (in litres) = 0.004913 litres
(ii) Volume = (23 cm)³
= (2.3 dm)³ = 12.167 dm³
Volume = 12.167 dm³
Volume (in litres) = 12.167 litres
(iii) 1 dm 1 cm = 1 dm + 0.1 dm = 1.1 dm
Volume = (1.1 dm)³
= 1.331 dm³
Volume = 1.331 dm³
Volume (in litres) = 1.331 litres
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