A line on a map was drawn at a scale of 5:100,000. If a line in the map is 290 mm long, the actual length of the line is:
A4.8 km
B5.8 km
C2.9 km
D6.4 km
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algebra
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The scale on the map is 1:x. A lot having an area of 640 sq. m. is represented by an area of 25.6 cm² on the map. What is the value of x?
A500
B1000
C50
D100