Convert 800km 250m 45cm into cm.

Hint:
Here we will first convert the 800kms into the centimeter. Then we will convert the 250m into centimeters. Then we will add all the values which are in centimeter to get the final conversion into centimeter.

Complete step by step solution:
First, we will convert 800km into centimeters.
We know that 1km is equals to 1000m i.e. \[1{\rm{km}} = 1000{\rm{m}}\] and 1 meter is equals to 100 centimeter i.e. \[1{\rm{m}} = 100{\rm{cm}}\].
Hence, 1km is equal to 100000cm i.e. \[1{\rm{km}} = 100000{\rm{cm}}\]. Therefore, we get
\[800{\rm{km}} = 800 \times 100000{\rm{cm}} = 80000000{\rm{cm}}\]
Now we will convert 250m into centimeters. We know that 1 meter is equal to 100centimeter i.e. \[1{\rm{m}} = 100{\rm{cm}}\]. Therefore, we get
\[250{\rm{m}} = 250 \times 100{\rm{cm}} = 25000{\rm{cm}}\]
Last term of the given number, 45cm, is already in terms of centimeter so we will not convert it.
Now we will add all the terms which are centimeter to get the value in terms of centimeter. Therefore, we get
\[800{\rm{km}}\,250{\rm{m}}\,45{\rm{cm}} = 80000000{\rm{cm}} + 25000{\rm{cm}} + 45{\rm{cm}} = 80025045{\rm{cm}}\]

Hence, 800km 250m 45cm equals 80025045cm.

Note:
Here in this question we have to convert each term into the required unit and then add it to get the required answer. We need to keep in mind the basic terms of the conversation for length or weight or time etc. To convert a variable into the other number we have a converting factor. Generally for converting some variable into a small unit of measurement then we will multiply it with the converting factor and for converting some variable into a high unit of measurement then we will divide it with the converting factor. We should remember that the kilometer (km), meter (m), and centimeter (cm) are the units of the measurement of the distance between two points or length.