Serenity Spa charges $59 for a one hour massage. They charge $0.95 per minute for each additional minute over an hour. If
1 answer:
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Answer:
The answer is A
Step-by-step explanation:
A * 2 = 1/2πr^2 * 2
2A / π = πr^2 / π
=
So, the answer is A because r =