I'm doing the same thing right now and I'm lost.
Answer:
$46
Step-by-step explanation:
100% of 40 is 40. 10 percent of 40 is 4. 5% of 40 is 2. 40+4+2=46.
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Formula
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Area of circle = πr²
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Find Area of circle
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Area of circle = 3.15 x 3²
Area of circle = 28.26 unit²
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Answer: Area = 28.16 unit²
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Interest = $572.60 - $560.00 = $12.60
$560 x 6i/12 = $12.60
i = ($12.60 x 12) / ($560 x 6) = 0.045%