The area of a square is 900 cm². Its perimeter is equal to the perimeter of a regular hexagon. What is the area (in cm²) of the hexagon?
A400√3
B300
C600
D600√3
A400√3
B300
C600
D600√3
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In triangle ABC AB-3 centimeters and <C 30°. What is the diameter of its circumcircle ?