A diagram is drawn to a scale of 1 : 25. A line on the diagram has

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A diagram is drawn to a scale of 1 : 25. A line on the diagram has length 20 cm. What actual length does it represent?

1 : 25 means that the actual lengths are 25 times bigger than those drawn.

20 × 25 = 500

So 20 cm on the diagram represents 500 cm (5 m) in real life.

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