Question

The area of field is 25,000m^2. Length and breadth of the field, on the map is 5cm and 5cm respectively. What is the Representative Fraction of the scale?

(a) 1/1200

(b) 1/3100

(c) 1/3162

(d) 1/3200

This question was posed to me during a job interview.

I want to ask this question from Scales in section Lettering Practice, Scales & Curves of Civil Engineering Drawing

Answer 1

Correct choice is (c) 1/3162

For explanation I would say: Area of the field = 25,000m^2

Area of field on the map = 5cm*5cm = 25cm^2

1cm^2 = 25000/25 = 1000m^2

1 cm = 31.62 m

Now Representative Fraction = 1cm /31.62m = 1/3162.