a metre=100 cm
half a metre=(.5)*(100)=50 cm
total length=previous length+half a length
= 78 cm +50 cm
=128 cm or 1.28 metre
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1m 78cm = 5' 10.1"
Half Square meter is twice as big as half a meter square.
Oh, dude, half a meter is like, half of a meter, so it's like 0.5 meters. It's not rocket science, unless you're measuring rockets, then you might need a full meter. But yeah, half a meter is just half of a meter, simple math, man.
Half a meter is 50cm. There are 10mm per cm so there are 500mm in 1/2 meter
2 half meters is 1 meter. There are 100cm in a meter