Answer:
side length a = 2 cm
Step-by-step explanation:
face diagonal f = 2.8284271247462 cm
solid diagonal d = 3.4641016151378 cm
surface area S = 24 cm^2
volume V = 8 cm^3
(x-6)^2+(y-14)^2=4
Brand B is better
Brand A's unit price is $0.24
Brand B's unit price is $0.21