The lateral area of the conical tent is
Formula used: The lateral area L of cone with radius r of base is
Use Pythagoras Theorem to find the slant height of the cone
Lateral area of the conical tent
Formula used: The surface area of a cone:
S+L+B, where L is the lateral area of the cone and B is the area of the base.
From part(1), Lateral area
the area of the base
Surface area of the conical tent
Identify each conic using eccentricity.