Find the surface area of the sphere.

radius of sphere is 8"

possible answers:

a) 64 pi sq. in

b) 256 pi sq. in

c) 1,024 pi sq. in

*the answer is b) 256 pi sq. in*

-i answered it by myself.-

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