Apr 2019

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 r^{3}, (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”