If length is measured by using a wrong scale, then the true correct length of the line is given by:
1
correct length = \(\rm \frac{RF\ of\ wrong\ scale}{RF\ of\ correct \ scale}\) × Measured area
2
correct length = \(\rm \frac{RF\ of\ wrong\ scale}{RF\ of\ correct \ scale}\)
3
correct length = \(\rm \left(\frac{RF\ of\ wrong\ scale}{RF\ of\ correct \ scale}\right)^2\) × Measured area
4
correct length = \(\rm \frac{RF\ of\ wrong\ scale}{RF\ of\ correct \ scale}\) × Measured length