Question: "in the figure below, both circles have the same center, and the radius of the larger circle is r. if the radius of the smaller circle is 3 units less than r, which of the following represents the area of the shaded region? "
answer is: (pi)r^2-(pi)(r-3)^2
*can someone explain how? i don't even know how to start. ~will draw diagram under~

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265