On a map of scale 1:50,000, a road measures 6 cm. What is its actual length?
Answer and explanation
Correct answer: B. 3 km
- Step 1: 6 cm x 50,000 = 300,000 cm. Step 2. 300,000 cm = 3,000 m = 3 km. Answer: 3 km. Why not the others: 30 km: That is out by a factor of ten. 300 m: That is out by a factor of ten the other way. 8.3 km: That divides 50,000 by 6.
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