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10 December, 06:49

A certain forest covers an area of

3600

km2

. Suppose that each year this area decreases by

8.5%

. What will the area be after

6

years?

+5
Answers (1)
  1. 10 December, 09:36
    0
    Let:

    P be the Initial Area, = (3500 km²)

    r, the rate of decrease = ( - 8.5%)

    n, the number of year = 6 years

    A the resulting Area:?

    A = P (1+i) ⁿ

    A = 3600 (1-0.085) ⁶

    A = 3600 (0.915) ⁶

    A = 2112.66 km²
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