Please help and tell me how did u solve it or how did you figure out the answer

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

The ideal weight of a nickel is 0.176 ounce. to check that there are 40 nickels in a roll, a bank weighs the roll and allows for an error of 0.015 ounce in total weight