Example of a subgroup of sn that is not normal, and prove that it is not normal give an prove that if g is a group and n and n' are two normal subgroups. prove that nnn' is a normal subgroup of n.

the answer is 62.8 cubic units

yes the data was not prsented

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.