# P-P Situation 4:

*A.*

*Create a formula to calculate the sum of the*

*in the*

*arbelos, which are constructed externally on the sides of the equilateral triangle, if the interface of the two small semicircles of each arbelos is the medium point of the respective sides of the triangle. Post GeoGebra construction.*

*B.*

*Post GeoGebra construction, which is a summary of the problem in the condition A. Bring a new formula for calculating the sum of the faces of arbelos constructed externally on the sides of a triangle.*

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