Answer with explanation:
We have to make the following conversions:
a)
90 kilometers to meters.
We know that 1 kilometer=1000 meters.
Hence,
90 kilometers=90000 meters.
b)
250 centimeters to hectometers.
We know that:
1 centimeter=0.0001 hectometers.
Hence, 250 centimeter=0.0250 hectometer.
c)
3500 millimeters to decameters.
1 millimeter=0.01 decimeter.
and 1 decimeter=0.01 decameter.
Hence,
3500 millimeter=0.35 decameter.
d)
10 dekameters to decimeters.
We know that:
1 decameter=100 decimeters.
Hence,
10 decameter=1000 decimeter.
