Office building was built in the shape of a regular hexagon inscribed in a circle with a radius of 12 m. The height of the walls is 7m. How much CZK cost plastering the walls of the building, if per 1 m square cost CZK 400?

Correct answer:

x =  201600 kc

Step-by-step explanation:

x=400 7 6 12=201600 kc

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