<span>The northern California study with a margin of error of 3.2%.</span>
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

Multiply 7 and 18

Multiply 126 by 2

Multiply the 49 by 2

Add

The answer is

Hope this helps!
Answer:
15-9=
6 ok I don't know if it's correct