It says to calculate the area of the sector in terms of Pi, I’m stuck on it, any ideas of what it could be?

Answer this question only if you know the answer! 30 points and

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

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?