Length of cloth had by Tina = 20 m 5 cm = 20.05 m
Length of cloth cut by her = 4 m 50 cm
= 4.50 m
∴ Subtracting 4.50 m from 20.05 m, we get:
20.05
-04.50
_________
15. 55
So, length of cloth left with her is 15.55 m.