1.

EXERCISE 2AExpress the following lengths as metres :1. 7 km2. 21 km

Answer»

since 1km =1000m so 7km =7×1000 m= 7000malso 21 km=21×1000 m= 21000m.

We know, 1 km= 1000 metres So,1) 7 km= (7*1000)metres = 7000 metres2) 21 km = (21*1000)metres = 21000 metres.

Since 1 Kilometre-1000mSo,7 KM will be 7000m and 21 KM will be 21000

1 kilometre=1000 metre7 kilometre=7000 metre



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