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Given:
The area of the patch is 16.0 cm2.
Calculation:
Part (a):
Write the expression of the area of the patch in km2.
Here, A is the area in km2, and A' is the area in cm2.
Substitute, 16 cm2 for A' in the above expression.
Thus, the area is 1.6x10-9 km2.
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