The area of circle(A) is given by the formula A=pi r^2 where r is the circle radius. The formula to find r is: 1.(A/pi)^1/2
2.A^2/pi
3.pi/A

A=54 centimeters^2and pi=22/7, r is_ centimeters
1: 4.15
2: 2.33
3: 17.2

Abee with velocity vector r'(t) starts out at (5, −5, −3) at t = 0 and flies around for 5 seconds. where is the bee located at time t = 5 if 5 0 r'(u)du = 0?

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?