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Description
The ancient Babylonian architect works on planning the next monument. For this he draws in the sand which provides him with fairly accurate approximations of π for practical computations, calculated as ratio of circumference and diameter of a circle, for which he draws the radius, and diameter of the circles in order to compare them.

Description
The ancient Babylonian architect works on planning the next monument. For this he draws in the sand which provides him with fairly accurate approximations of π for practical computations, calculated as ratio of circumference and diameter of a circle, for which he draws the radius, and diameter of the circles in order to compare them.