Respuesta :
Using two unit multiplier 628 km is equal to 62800000 cm
Solution:
628 kilometer to centimeter
We will go from kilometers to meters to centimeters.
Start by putting 628 km over 1:
[tex]\frac{628 km}{1}[/tex]
We want to get rid of km and bring in m.
We know that 1000 m = 1 km.
Since km is in the numerator, we will make the first unit multiplier by putting 1 km in the denominator and 1000 m in the numerator, so the km will cancel. So we multiply by the unit multiplier,
[tex]\frac{628 km}{1} \times \frac{1000m}{1km}[/tex]
Now the km's will cancel:
[tex]\frac{628}{1} \times \frac{1000m}{1}[/tex]
Now we want to get rid of m and bring in cm.
We know that 100 cm = 1 m.
Since meter is in the numerator, we will make the first unit multiplier by putting 1 meter in the denominator and 100 cm in the numerator, so the meter's will cancel. So we multiply by the unit multiplier
[tex]\frac{100cm}{1m}[/tex]
[tex]\frac{628}{1} \times \frac{1000m}{1} \times \frac{100cm}{1m}[/tex]
We cancel the m's and we end up with:
[tex]628 \times 1000 \times 100 cm[/tex]
= 62800000 cm
Thus 628 km is equal to 62800000 cm
