Final answer:
The approximate radius of the Earth's moon is 1,079.55 miles.
Step-by-step explanation:
The radius of the Earth's moon is approximately 1,079.55 miles (Option A).
To calculate the approximate radius of the moon, we can use the information provided in the references. According to the references, the moon's diameter is one-fourth that of the Earth and is located 30 Earth-diameters away from Earth, on average. Since the Earth's diameter is known to be approximately 7,918 miles, we can multiply it by 30 and divide by 4 to get the approximate radius of the Moon.
Calculations:
Earth's diameter = 7,918 miles
Approximate radius of the Moon = (7,918 miles * 30) / 4 = 1,079.55 miles