I am trying to get a formula for the lateral surface area of 2 semi circles that is a right solid that have a height of 14 meters. The small semi circle has a radius of 15 and the large semi circle has a radius of 18 and there is a middle length of 23, these are connected in the middle and it is kinda hard to explain but think of a orange that is smaller on one half then the other.My teacher loves this problem but he has yet to produce the formula for it. I am flustered here.

Am I making any sense?