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Number of shoes produced in 10 years is approximately 2 × 10^6 pairs of shoes
Step-by-step explanation:
Number of shoes produced per month = 1.81 × 10^4 ≈ 2 × 10^4
Number of months in 10 years = 1.2 × 10² ≈ 1 × 10²
⇒ Number of shoes that will be produced in 10 years = (2 × 10^4)(1 × 10²)
= 2 × 10^6 pairs of shoes in 10 years.