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प्रश्न
Express the following in standard form:
Express 56 km in m.
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उत्तर
Given, 56 km = 56 × 1000 m ...[∵ 1 km = 1000 m]
= 56000 m
Standard form of 56000 m = 56 × 103
= 5.6 × 103 × 101 ...[∵ am × an = (a)m + n]
= 5.6 × 104 m
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