Final answer:
To scale a line of 25 cm by a factor of 5, you multiply the original length by the scale factor to get the new length, which would be 125 cm.
Step-by-step explanation:
If you have a line that measures 25 cm and you scale the line by 5, the length of the new line would be obtained by simply multiplying the original length by the scale factor. This is a basic proportion problem where we apply the concept that if a scale factor of 5 is used, every 1 cm on the original line would now be represented by 5 cm on the scaled line.
To calculate the new length:
- x = original length × scale factor
- x = 25 cm × 5
- x = 125 cm
Therefore, the length of the new scaled line is 125 cm.