Answer:
13.8 cm
Step-by-step explanation:
the sides of the triangle measure 3.6, 5.7,4.5cm?
So, we have
perimeter is 3.6 + 5.7 + 4.5
13.8 cm
I did this equation and it’s A
For two complex numbers

and

, the product is

That is, you multiply the moduli and add the arguments. You have

and

, so the product is