What is the rational number equivalent to 3 point 12 with a bar over 12? 3 and 4 over 33 3 and 8 over 33 3 and 10 over 39 3 and 5 over 39

  3 4/33

Step-by-step explanation:

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Without going through the whole derivation, a repeating decimal of n digits can be written as those n digits over the same number of 9s.

Here, we have the repeating decimal .121212... so its equivalent fraction is 12/99. That can be reduced to 4/33.

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Comment on the above

If the repeating digits don't start at the decimal point, the fraction must be scaled by the appropriate power of 10. For example, ...

  0.83333... = 0.8 + 0.03333... = 0.8 + 0.1·(0.3333...) = 0.8 + 0.1·(3/9)

  = 8/10 +(1/10)(1/3) = 8/10 + 1/30

  = 24/30 + 1/30 = 25/30

  = 5/6

it is a secret for it not to be compromised sorry

step-by-step explanation:

the answer is:

the correct option is the option b.

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!