Amanda composed two songs. the longer song is 126 seconds less than twice the length of the short song. the longer song lasts 286 seconds. how long is the shorter song?

21/58.

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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.

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