In order to answer this question the parts must be broken down: 8^3 is
8*8*8 which equals 512 and 8^5 is 8*8*8*8*8 which equals 32761.
512*32761 equals 16777216. 167772176 is greater than 1.
It is true because if a is perpendicular to b and b is perpendicular to c therefore a has to be perpendicular to c also they said that all three lines are coplanar therefore the statement must be true