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A map has a scale of 1 cm : 12 km. Two cities are 2.1 cm apart on the map, what is the...

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taylorsummers | Student, Grade 9 | eNotes Newbie

Posted May 29, 2012 at 4:24 AM via web

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A map has a scale of 1 cm : 12 km. Two cities are 2.1 cm apart on the map, what is the actual distance corresponding to the map distance?

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sciencesolve | Teacher | (Level 3) Educator Emeritus

Posted May 29, 2012 at 5:09 AM (Answer #1)

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The problem provides the map scale that is commonly reported as it follows: 1 cm as measured on map surface is equal to 12 Km measured on the earth's surface.

The problem provides you the distance between two points 0f 2.1 cm as measured on the surface on map and you need to determine the distance on the earth's surface such that:

distance on earth's surface = 2.1*12 = 25.2 Km

Hence, evaluating the distance on earth's surface between two points under given conditions yields 25.2 Km.

 

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akshitasharma | Student, Grade 10 | eNotes Newbie

Posted May 29, 2012 at 12:44 PM (Answer #2)

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You gotta use the unitary method to do this sum.

According to the sum 1cm on the map is 12km on the ground.

The cities are 2.1 cm apart on the map.

If 1cm on the map is 12km on the ground

then 2.1cm on map would be 2.1 *12 km on the ground = 25.2km

 

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