I need help with this​

3347.68

Step-by-step explanation:

The surface area of a cylinder has the equation:

A=2πrh+2πr2

substituting the values in you get:

2·π·18·11.6+2·π·182 = 3347.68

Hope this helps!!

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

yes

yes yes yes