20 cm / 3m = 20/300 = 1/15 ( = 0.066...) of them.
3 meters plus 67 centimeters = 367 centimeters
2.54
To convert meters to centimeters, you multiply the number of meters by 100, since there are 100 centimeters in a meter. Therefore, 3 meters is equal to 3 x 100 = 300 centimeters.
6210 centimeters this has 3 significant figures
3.45meters = 3 meters & 45cns