Aswimming pool has a diameter of 21 feet. what is the circumference of the swimming pool? use 22/7 for 3.14

Asap the total attendance for all of a baseball league in 2012 was about 7.5×107 fans, while the attendance for the tornadoes in 2012 was about 1.5×106 fans. about how many times more was the attendance for the entire baseball league than the attendance for just the tornadoes? 50 times more 10 times more 2 times more 5 times more

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?