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Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 45)
If the scale is 1:250 and the length of an object on the model is 8 cm, what is the actual length?
20 m
2 m
0.2 m
0.032 m
解释
8 * 250 cm = 2000cm or 20m
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