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Question

# Raju covers 3 km of distance each day. How many centimetres does Raju covers each day?

A
3000 cm
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B
300000 cm
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C
300 cm
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D
30 cm
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Solution

## The correct option is B 300000 cmWe know that 1km = 1000m Therefore 3 km = 3 × 1000 m = 3000 m Now we know that 1m = 100 cm Therefore 3000 m = 3000 × 100 cm = 300000 cm So, Raju covered 300000 cm in a day. Method 2 We can also solve this problem using a measurement table. Looking at the table When we convert a larger unit (km) to a smaller unit (m) we multiply by the conversion factor. Therefore to convert 3 km to meters we have to multiply 1000 I.e. 3km = 3 x 1000 m = 3000 m Now again to convert 3000 m to cm we have to multiply by 100 3000 m = 3000 × 100 cm = 300000 cm Answer = 300000 cm.

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