1) Formula area for a circle? a) A=s² b) R=2l+ 2w c) A=πr² 2) Which is the value for pi(π)? a) 3.14159 b) 1.34915 c) 9.51413 3) Find the area. a) 452.4m² b) 2.010m² c) 8.3m² 4) Who first calculated pi? a) Claudio Ptolomeo b) Archimedes of Syracuse c) Liu Hui 5) Find the area. a) 2.6yd² b) 74.1yd² c) 12.6yd² 6) Find the area of a circle of 15cm of radius which amplitude is 90º. a) A= 176.71cm² b) A=274.89cm² c) A=127.63cm² 7) Find the area of a circle of 15cm of radius which amplitude is 120º. a) A= 176.71cm² b) A=274.89cm² c) A=127.63cm² d) 235.62cm² 8) Find the area of a circle of 15cm of radius which amplitude is 140º. a) A= 176.71cm² b) A=274.89cm² c) A=127.63cm² d) 235.62cm² 9) Which number appears most in the first 6 billion decimal places of Pi? a) 5 b) 2 c) 1 10) Pi is named after a letter of which alphabet? a) Russian Alphabet b) Greek Alphabet c) Chinese Alphabet 11) Which of these fractions is closest to Pi? a) 21 over 8 b) 22 over 7 c) 5 over 3 12) Pi rounded to 9 decimals is: a) 3.145191654 b) 3.141952654 c) 3.141592654

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