In a circle a 45 degree sector has an area of 32 pie cm ^2 what is the radius of the circle

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck