2 answers:
The formula for the surface area is given and as follows.
SA = (2)(3.14)(r^2) + (2)(3.14)(r)(h)
The radius of the cylinder is 4 inches and the height is 9 inches. Using the given values, we can plug them into the formula and solve for the surface area from there.
SA = (2)(3.14)(4^2) + (2)(3.14)(4)(9)
SA = (6.28)(16) + (6.28)(36)
SA = 100.48 + 226.08
SA = 326.56 in^2
Hope this helps!! :)
Answer:
The answer to your question is SA = 326.56 in²
Step-by-step explanation:
Data
pi = 3.14
height = 9 in
radius = 4 in
Formula
SA = 2πr² + 2πrl
Process
This process is very easy to solve because we have all the values and the formula so, just substitute the values and simplify.
-Substitution
SA = 2(3.14)(4)² + 2(3.14)(4)(9)
-Simplification
SA = 100.48 + 226.08
-Result
SA = 326.56 in²
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