The answer is :
a) 27 m= 2700 cm.
b) 38 dam = 380 m.
c) 34 m = 0.34 hm.
Lets know about the given prefix first,
m = Meter means one hundred centimeter so,
1 m = 100 cm
cm = Centimeter means one-hundredth of a meter so,
1 cm = 0.01 m
mm = Millimeter means one-thousandth of a meter so,
1 mm = 0.001m
hm = Hectometer means one hundred meters so,
1 hm = 100 m
dam = Decameter means ten meters so,
1 dam = 10 m
So,
a) 27 m = 2700 cm
b) 38 dam = 380 m
c) 34 m = 0.34 hm.
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