Help I am being timed

Let us say  x  is a real number   and  z = a + ib  is complex

|x| > 0

|z| = |a + ib| =  square-root (a^2 + b^2)

Step-by-step explanation:

|x| > 0   the absolute value of a real number is a nonnegative real number

The |a + ib|  =  square-root of the sum of the squares of the real components of the complex number

step-by-step explanation:

|ab| = 1.4 = 4

h = 1.4 = 4

a(abc) area = 4.4 = 16/2 = 8

area of abc = 8 cm^2

good luck ! ; )