Answer:
5.497787144 miles
Step-by-step explanation:
Remember that circumference of a circle can be calculated with:

r=radius
We also know that the radius is just a half of the diameter.
So, the radius of the track is (1/2)/2=1/4 miles
Now, use the circumference of a circle formula to find how much she runs in 1 lap.

Simplify

This is how much she runs in 1 lap.
Multiply by 3.5 for 3 and a half laps.

The answer is around 5.497787144 miles.
Answer:
Texting speed
Step-by-step explanation:
It's the dependent variable
Answer:
32.1869
Step-by-step explanation:
Formula :
for an approximate result, multiply the length value by 1.609
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Step-by-step explanation:
She made a sign error when multiplying and should have had 256 as a final answer.