Question

construct a graphic scale on R.F. of 1:40,000 so that one can read kilometers and metres directly on it.

Answer 1

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Answer 2

The scale 1:40,000 can also be expressed as 1cm represent 40,000cm.

This can also be expressed in meters by dividing 40,000cm by 100cm so as to convert it to meters.

Thus this will be 1cm represents 400m,and as a R.F it can be expressed as 1/400

The same scale 1:40,000 can also be expressed in kilometers by dividing 40,000cm by 100,000cm to convert it to kilometers.

It will be 1cm represents 0.4 km thus in R.F it is 1/0.4.