Final answer:
The question is about the lateral surface area of a cone. The main formula to use is πr * l. In scenarios where you only have the height and radius, the slant height can be determined with the Pythagorean theorem.
Step-by-step explanation:
The subject of the question pertains to the lateral surface area of a cone, which is a mathematical concept related to geometric shapes. The formula for the lateral surface area of a cone is given as πr * l, where r is the radius, l is the slant height. Obviously, the parts (a) and (b) of the question are missing, so the specifics cannot be completed. However, it's important to note that when dealing with cone problems, we'll need to use this formula and possibly geometrical relations such as Pythagoras theorem. Take for instance a situation where we only have the height h and the radius r, the slant height l will be √(h^2 + r^2). With this, you can then compute the lateral surface area.
Learn more about Lateral Surface Area of a Cone