Andre and Lin are 12 miles apart on a path when they start moving towards each other. Andre runs at a constant speed of 5 miles per hour, and Lin walks at a constant speed of 3 miles per hour. How long does it take them to meet?

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step-by-step explanation:

what lives in the hood

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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