Aclose estimate of the radius of the earth's equator is 3,960 miles. which of the following is the equation of the equator, if the center of the earth is considered to be the origin?
a: x^2+y^2=3,960
b: (x-3,960)^2+(y-3,960)^2=15,681,600< br /> c: x^2+y^2=15,681,600
d: (x+3,960)^2+(y+3,960)^2=15,681,600

B part: 69 miles

Step-by-step explanation:

40 minutes

step-by-step explanation:

add the time and multiply by 2

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step-by-step explanation:

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