Question

The distance between NY and Boston is 306 km. How long is it on a map (in cm) drawn at a scale of 1:1,200,000?

Answer 1

25.5 cm

Step-by-step explanation:

Scale of 1:1,200,000 means 1 cm equals to 12 km.

Now divide 306 by 12 to you will get 25.5 cm.

So the answer is 25.5 cm in 306 distance.

Answer 2

Given:

1 cm = 1200000 cm

using conversion : 1 km = 100000 cm

`1 cm = 12 * 100000 cm`

1 cm = 12 km

or we can write this as:

12 km = 1 cm

306 km =
`(1 * 306)/(12) = (306)/(12) = 25.5` cm (by unitary method)

Therefore, the distance between Ny and Boston on map(in cm) is, 25.5 cm