Answer:
'Earth is the size of a tip of a ballpoint pen about 15 m away from the sun, is the correct answer.
Explanation
Radius of sun = 7 x 10^8 m
Radius of the earth = 6.37 x 10^6 m
Radius of grapefruit = 7.6 x 10^-2 m
Since sun is the size of a grapefruit.
So, our scale = (7.6 x 10^-2) / (7 x 10^8) = 10^-10
Means the scale is approximately, 1:10^-10
So, size of earth = 6.37 x 10^6 x 10^-10 = 6.37 x 10^-4 m (Size of ballpoint)
As we know that the distance between the sun and the earth = 14.9 x 10^10 m
So, in our scale, distance between the sun and the earth = 14.9 x 10^10 x 10^-10 = 14.9 m
which is approximately 15 meters.
