Your school is choosing new school colors. which group should you ask to get a random sample of student opinion?
a ten 7th grade students
b every tenth student that enters the building in the morning
c twenty 1st and 2nd graders
d every other student going into the principal's office

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.