Figure shows a measuring scale which is usually supplied with a geometry box

Figure shows a measuring scale which is usually supplied with a geometry box. Which of the following distance cannot be measured with this scale by using it only once?

 

  1. 0.1 m
  2. 0.15 m
  3. 0.2 m
  4. 0.05 m

Answer

1 m = 100 cm

So, 0.1 m = 10 cm

0.15 m = 15 cm

0.2 m = 20 cm

0.05 m = 5 cm

The distances 10 cm, 15 cm and 5 cm can be easily measured by using a 15 cm long scale, while the distance 20 cm cannot be measured by using this scale only once.

The correct option is C.