Answer: 600 m
Step-by-step explanation:
Sol a : Imagine we have measured a distance as 1.5 cm on this map, and we want to find out how far this is in real life.
To work out the distance in real life, we need to multiply this length by 40,000.
This gives 1.5 cm × 40,000 = 60,000 cm which is 600 m or 0.6 km.
Sol b : Alternatively, we could have just remembered that each 1 cm on the map is 0.4 km in real life.
Hence, 1.5 cm on the map must be 1.5 × 0.4 km = 0.6 km in real life.
Answer:
Actual length of a bridge = 600m
Step-by-step explanation:
Given :
Length of a bridge on a map is 1.5 cm.
Map is drawn at a scale of 1:40000.
Calculation :
[tex]\rm{Actual \;length} = \dfrac{\rm{Length\; of\; a\; bridge \;on\; a \;map}}{\rm{Scale \;at\; which\; map\; is\; drawn}}[/tex]
[tex]\rm Actual \; length = \dfrac{1.5}{\dfrac{1}{40000}}[/tex]
[tex]\rm Actual \; length = 60000 \rm cm[/tex]
Actual length of a bridge = 600m
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