Question

Smriti walks 2.64 km daily. Express it in (a) metre (b) decametre (c) hectometre​

Answer 1

Answer:

(a) 2,640 metres

(b) 246 decametres

(c) 24.6 hectometres

Explanation:

(a) One kilometre = 1,000 metre, therefore

2.64 km = 2.64 x 1,000 = 2,640 metres

(b) One decametre = 10 metres (remember 'deca' means 'ten')

Therefore from (a) above 2,640 metres = 246 decametres

(c) One hectometre = 100 metres

Therefore from (a) above, 2,640 metres = 2640 / 100 = 26.4 hectometres

Remember that:

Units smaller than a meter have Latin prefixes like Deci, Centi, Milli

Units larger than a meter have Greek prefixes Deca, Hecto, Kilo