I need help with this math problem. Please someone help me if they can.

Mathematics

2 answers:

My name is Ann [436]3 years ago

7 0

The equation for the surface are of a cylinder is 2pi(r)(h)+2pi(r)^2
SA=2 pi(4)(12.4)+2 pi(4)^2
The surface area is 412.2, which for you is rounded to 412 cm^2

Veronika [31]3 years ago

6 0

The answer is 412

hope this helps
can i plz get brainliest

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Answer:

see below

Step-by-step explanation:

Put -1 where x is in each expression and evaluate it.

You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...

(x +1)

Substituting x=-1 into this factor makes it be ...

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Evaluating the first expression, we have ...

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This first expression is one you want to "check."

You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)