Way Off facts · 🔢 Numbers
How many bricks are in the Great Wall of China, roughly?
3.87 billion
bricks
3,870,000,000 exactly, give or take
Nearly 4 billion — enough to circle the equator with a one-metre wall.SOURCEWidely cited engineering estimate
Scale check: 3.87 billion is roughly 1 in 8 people on Earth.
Would you have guessed? You'll be way off.
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