Tanya bought two adult tickets and one children's ticket to a movie for $15.90. li bought four adult tickets and four children's tickets for $38.40. find the cost of one adult ticket and the cost of one children's ticket.

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a