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How to use the Keypad:

  • Press the button that is the SOLUTION to the question below

  • The PIN is FOUR numbers

  • If you input the wrong number the code resets

  • BE CAREFUL! The questions COULD change

  • Once all FOUR correct numbers are entered you will gain entrance to the building

  • RESET starts the PIN over

CLUE TO THE BUTTON:

A square with side of length 4 is inscribed in a circle. The numeric area of this circle can be written as k π r. Determine the exact value of k.

3    7    1      

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