Answer:
There are 12 inches in a foot and 2.54 centimeters in an inch so since he is 5 feet you would multiply 5 and 12 and then add the remaining 10 inches:
5 times 12 = 60 + 10 = 70 inches
Now, there are 2.54 centimeters in an inch and since he is 70 inches tall you will multiply how many inches tall he is by the mesurment of a centimeter:
70 times 2.54 = 177.8cm
John is 177.8 cm tall!
Explanation:
Hope it helps! =D