It is known that both the generatrix length and the bottom diameter of a cone are equal to 2. If a circle is cut out from its side view, the maximum area of the circle is? Such as the title

It is known that both the generatrix length and the bottom diameter of a cone are equal to 2. If a circle is cut out from its side view, the maximum area of the circle is? Such as the title

The cone is expanded into a semicircle with radius equal to 2. If the radius of the largest circle in the semicircle is 1, the area is π

Given that the diameter of the bottom of the cone is 2 and the length of the generatrix is 3, what is the side area of the cone?

Bottom circumference = 2 π r = π * diameter = 2 π
Side area = π L ^ 2 * 2 π R / 2 π L = π LR = π * 3 * (2 / 2) = 3 π

If the diameter of the generatrix and the bottom of the cone are equal to a, then the side area of the cone is______ ．

The diameter of the generatrix and the bottom of the cone are equal to a, and the side area of the cone = a × π a △ 2 = 12 π A2