To+move+on+to+7.5+CLICK+HERE

=7.5= =Objectives:= Define and use the formula to get the surface area of a cone Define and use the forumla to get the volume of a cone

Definitions:
Cone: a 3D figure that has a circular base and has all curvedlater faces that all share the same vertex Base:Faces that are formed by an shape (square circle) is moved through space Lateral Faces:The faces that form when translating a firgure through space Altitude: A segment that has endpoint at the vertex of the cone that expends to the center of the base of the cone at a perpendicular bisecter Height: Length of the altitude Vertex:Single pint that does not land on the base Right Cone: A cone that has a altitude that intersect the base in the center Oblique Cone: A cone that does not have an altitude that intersect the base in the center Slant Height of the Cone: Is the height of the altitude on the lateral faces

Surface Area and Volume.............
To equation to find the surface area of a right Cone is..... S=(pi)rl+(pi)r² with R=the radius of the base such as: with L=the length of the lateral slant as in: So knowing that if you where asked this question :I need to make a party hat out of cardboard,how much cardboard will i need, if the cone shape has to have a bas at least 8 inches wide and a cone that has a nice even slant of 7 on each side: In other words what is the surface area of this cone: Now we know we need the radius but that is not given but easy to find...The radius is = to 1/2 the diameter..in others words if you cut the diameter in half we will have the radius

8/2=4 so lets fill in what we know: S=(pi)4x7(because it is given in the picture)+2(pi)4² plug it in to that calculater... S=188.49units²

Volume......
V=1/3(pi)r²h so if you were given the same picture as above but asked to find the volume this is what you would do: V=1/3(pi)r²h V=1/3(pi)4² sense we are not given h we must find it we can find it by using the Pythagryon Theorm...a²+b²=c²...but sense we alread know the hypotonuse of the triangle we will first draw it like this:Because we were already given the radius and slant height And set the equation like this: a²+4²=7² a²+16=49 -16 -16 a²=33 now we must find the square root of 33 to get a or the height of the cone(NO ratical sign on this program) a=5.74 fill in equation V=1/3(pi)4²x5.74 plug it in..... V=96.17units³

To further your knowledge on surface area and volume of a cone or even to test your knowledge with a few question [|CLICK ME NOW] Almost Done To Compelete Your Knowledge on Surface Are and Volume CLICK ME PLEASE