Question

The scale of a map is given as 8cm:2km. Find the actual length of a river which is measured
as 4 cm on the map.​

Answer 1

Answer:

We are given,

2 cm ⇒1000 kms (scale)

So, For 2.5 cm ⇒ ? kms (say x)

By Ratio, we get required distance 

10002=x2.5

x=22.5×1000 kms 

x=1250kms.