Hello!
To find the surface area of a cylinder you use the equation

SA is surface area
r is radius
h is height
Put in the values you know

Square the number

Times the 9 and 3

Multiply the 2 and 27

Multiply the 2 and 81

Add

The answer is

Hope this helps!
Answer:
I believe the answer is 250. I hope this helps Bye!
Your answer is 50°
This is because angles in a triangle add up to 180°, so you can do 65 + 65 = 130, and then 180 - 130 = 50, and since angle x is opposite that angle, then angle x is 50°
I hope this helps!
The first sentence → x - 2y = -1
the second one → 3x - 2y = -3
multiply the first one by -1
you can get → -x + 2y = 1
plus two sentences together
you can get → 2x = -2
so you are able to know that x = -1
and y = 0