These dimensions are not possible for a right cone. The radius must be less than the slant height. If we reverse the dimensions (radius 6, slant height 9) the total surface area will be about 282.74 units2
slant edge is a height of a cone
Knowing the slant height helps because it represents the height of the triangle that makes up each lateral face. So, the slant height helps you to find the surface area of each lateral face.
What do you mean by the radius of 4? Radius is used in circles. Do you mean that the breadth is 4? If so you can use Pythagoras's Theorem to find the 'slant height' (provided that it is a right-angle triangle) (slant height)2=52+42
452 cm3 (this assumes you mean 12 cm vertical height, not slant height). If the slant height is 12 cm then the volume changes to 392 cm3.
no
Why do you need to FIND the slant height if you have the [lateral height and] slant height?
Because the Hypotinuse is the sum of the square of the other two sides. The sum of the square of the base plus the square of the height equals the slope.
the slant height is always 2 units bigger then the height
the slant height is always 2 units bigger then the height
Its slant height is bigger. Think of it as a triangle: the hypotenuse is always the largest side, and the slant height is like the hypotenuse.
These dimensions are not possible for a right cone. The radius must be less than the slant height. If we reverse the dimensions (radius 6, slant height 9) the total surface area will be about 282.74 units2
(slant height)2= (height)2+(1/2 side)2
Slant height is 16.16 cm
The slant height will be 25 cm
Slant height is 7.81 inches.
The slant height cannot be larger than the base radius.