Test Index

WAEC Geography 2021 Papers

Question : 8

Total: 50

Study the map of DAMBO DISTRICT and use it to answer the question below

Solution:

Concept:

The Representative Fraction (RF) expresses a map distance to the ground distance as a ratio in the same unit.

It is written as

1 : x

, meaning

1

unit on the map equals

x

units on the ground.

Explanation:

On the linear scale of the Dambo District map, the marked distance shows that

1\text{ cm}

on the map represents

0.5\text{ km}

on the ground.

To write the RF, convert both distances to the same unit.

Since

1\text{ km} = 100{,}000\text{ cm}

, we have

0.5\text{ km} = 0.5 \times 100{,}000\text{ cm} = 50{,}000\text{ cm}

Therefore,

1\text{ cm}

on the map

= 50{,}000\text{ cm}

on the ground.

This gives the RF as

1 : 50{,}000

Answer:

1 : 50{,}000

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