The base of this regular right pyramid is a square. what is its surface area? base edge = 8in height = 12in

Plz i want answer and i would appreciate it is is a b c or d

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?

Find the value of x in the diagram below. select the best answer from the choices provided