The rectangular prism shown has a surface area of 488 square inches. What is the length of the prism?
A.10
B.14
C.31
D.35

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.