Final answer:
The other piece is 3 m 85 cm long.
Step-by-step explanation:
To find the length of the other piece, we need to subtract the length of one piece from the total length of the string. The total length of the string is 6 m 50 cm, which is equivalent to 650 cm. The length of one piece is 265 cm. To find the length of the other piece, we subtract 265 cm from 650 cm. The answer is 385 cm. Converting 385 cm to meters and centimeters, it is 3 m 85 cm. Therefore, the other piece is 3 m 85 cm long.