Apr 2019
Addendum
Calculation of
Volume of Earth Unknown, unreachable, hence unexplored (so far)
= everything 7.6 miles below the average surface
Since sphere Volume = (4/3) π r3, (r = radius)
to compare the volume of the slightly smaller, Unknown sphere inside
to Earth’s entire volume, one only need consider the ratio between the two radii cubed: ¹
– i.e: the radius of the entire Earth cubed vs. the cube of the Unknown radius:
Per the Earth’s SI radius of 3,959 miles:
3959 – 7.6 = 3951.4 , the radius of Earth’s interior Unknown
The respective volumes are thus proportional to the cube of each radius:
Total volume (T) ∝ 3959 ³ = 62,052,103,079
and Unknown volume (U) ∝ 3951.4 ³ = 61,695,428,728.7
% Unknown is thus:
¹ (4/3) π in both numerator and denominator resolves to “1”