Mathematics cylinder and cone formula

Mathematics cylinder and cone formula

V = sh, v = 1 / 3SH, this is volume. Do you know what formula you want is area?

What is the derivation formula of the conic cylinder in the sixth grade mathematics of primary school
Note the derivation of the formula

The volume of the cylinder is equal to the area of the bottom multiplied by the height. The volume of the cone filled with water is equal to one third of the volume of the cylinder with the same bottom and height. The surface area of the cylinder is equal to the perimeter of the bottom multiplied by the height and the area of two bottom circles

Mathematics book of Grade 7 Volume 2 45 pages of knowledge and skills
To process (X-2) (x + 2) - (x + 1) (x-3) (AB + 1) ^ 2 - (AB-1) ^ 2 (2x-y) ^ 2-4 (X-Y) (x + 2Y)

x2-4-(x2-2x-3)=2x-1 a^2b^2+1-a^2b^2+1=2 4x^2-4xy+y^2-4x^2-8xy+4xy+8y^2=9y^2-8xy

The knowledge and skills of the sixth grade mathematics book Volume II page 178