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:
it
Step-by-step explanation:
it is C hope this helps
Answer:
length when found = length at birth + (age × yearly growth)