Answer:
Your answer is -4
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The answer is 40 because if you multiply 4 times per week× for 10 weeks=40 times for ten weeks.
You find the circumference is 2PIr
so radius is half of the diameter so 7/2=3.5
pi= 3.14
2*3.14=6.28
6.28*3.5= 21.98
It's a big decimal so I'm going to round it up.
2.245
