Changing maps using an area ratio

Changing maps using an area ratio

Secondary 2
TGM Original Questions

A lake of actual area \(1\text{ km}^2\) is represented by \(6.25\text{ cm}^2\) on a map of scale \(1:n\).

  1. Find \(n\). A new map represents the lake by one quarter of its original map area.
  2. Find the actual distance represented by \(10\) cm on the new map.

Solution:

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Answer:(a) \(40000\); (b) \(8\) km.

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