Amanda has started running as her primary form of exercise, but she's getting bored with it and finds excuses to procrastinate.
It's also getting really hot outside now that it's summer, and Amanda's skin is sensitive to the sun. She has a significant budget available to help her fix the problem but is unsure how to spend the money.
What might be the most appropriate purchase for Amanda?
ANSWER please ⬆️⬆️⬆️ correctly! GIVING OUT BRAINLY STARS!!! 
What might be the most appropriate purchase for Amanda?
ANSWER please ⬆️⬆️⬆️ correctly! GIVING OUT BRAINLY STARS!!!
2 answers:
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Answer:
New Resistance = 0.5556 ohm
Explanation:
Resistance = resistivity * length /area
Here since resistivity and length are constant, we only need to see how the resistance increases or decreases with change in area.
New Area = pi * (3*D)^2 / 4
Old Area = pi * D^2 / 4
The ratio of new area / old area is :
Since area increases 9 times, and it is inversely proportional to resistance:
Resistance decreases by 9 times.
So, old resistance = Voltage / Current = 10 / 2 = 5 ohm
New Resistance = 5 / 9 = 0.5556 ohm (decreases by 9 times)