Write the equation of the parabola with the vertex at the origin, and the directrix at y = -2:

$15 each

step-by-step explanation:

$45/3 children= $15 each

no

step-by-step explanation:

answer

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!