The following map shows the layout of City A. In the map, the hospital is 3 km to the east of the housing complex and 2 km north from that point. If so, how far is the mall from the city center at (0,0)?
(Scale: 1 unit = 1 km)
A
2 km
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B
3 km
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C
5 km
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D
4 km
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Solution
The correct option is D 4 km Let the location of the hospital be P.
The hospital P is 3 km to the east of the housing complex H.
So, we move 3 units to the right of H.
Next, we move 2 units to the top.
Hence, the coordinates of the hospital P on the map are P(0,4).
Measuring the distance from the city center at (0,0) to the hospital at P(0,4), we get:
Hence, the hospital is 4 km away from the city center.