Three tenths.
172 in = 4.3688 metres
172
There are 172 days in 172 days. If you meant weeks, then there are 24 weeks and 4 days in 172 days.
46 tenths
There are 6 tenths in 0.6
45 tenths
172 inches = 14.33 feet
172 cm = 5' 7.7"
172 centimeters is 5.64 feet.
There are 9 tenths in 9 tenths.
6.4 of them. 6 and 4 tenths has 64 of them.