5 km 3hm 7 dam 4 m by 15 (in km)
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Answer:
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Step-by-step explanation:
1hecto metre=0.1km⇒5hecto metre=0.5km
1Deca metre=0.01km⇒3Deca metre=0.03km
1metre=0.001km⇒4metre=0.004km
∴6km+5hm+3dam+4m
=6+0.5+0.03+0.004=6.534km
Product of 6.534km and 12
=6.534×12=78.408km
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