How do i solve this function? (number 28)

For ever input, there is one ouput

it means we can't repeat the same x with a different y
but repeats of y's are allowed

pick any numbers that haven't been used as an input

-5 isn't taken
0 is taken
11 is taken
-1 is taken
2 is not taken
17 is taken

so -5 and -1 or A and D are the answers

Hello!

the answer is:

the correct option is the option b.

why?

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!

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