For 8 billion people occupying roughly 0.07 m³ each, total human volume is about 560,000,000 m³. Taking the cube root of this volume gives a side length of approximately 824 metres, under 1 kilometre.
Ganita Manjari Part 2 Class 9 Chapter 14 Step by Step Solutions
Class 9 Chapter 14 Math of Space Surface Area and Volume (Ganita Manjari 2) Solutions
Assuming an average human body volume of about 0.07 m³ (corresponding to an average weight around 70 kg, close to the density of water). For an estimated global population of 8 billion people, the total volume required is 8,000,000,000 × 0.07 = 560,000,000 m³. If packed into a cube of volume V = a³, side length is a = ∛560,000,000 ≈ 824 metres, well under 1 km.
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