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  • Estimation Challenges
  • Number Talks
  • Dane Ehlert's Blog
  • Michael Fenton's Blog

How many shapes are in the spiral?

Picture

Description from Daily Overview

27.380541787°, 33.634132451°

“Desert Breath” - located in the Egyptian desert near Hurghada on the Red Sea - is a double-spiral art piece. Because the          protruding cones that make up one spiral are constructed from the sand that was dug to create the         depressed cones of the other spiral, in due time, with erosion, the area of approximately one million square feet will revert back to its original state.

Answer
Daily Overview / Satellite imagery courtesy of Digital Globe / Benjamin Grant
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