The perimeter, area and volume of the graph: (1) perimeter (the length of the periphery) C△= the sum of three sides c rectangle = (length+width) ×2 C parallelogram = twice the sum of two adjacent sides c square = side length× 4c diamond = side length× 4c circle =2πr(r is the radius) = πd(d C trapezoid = length of two bottoms+length of two waists (2) Area S△= bottom× height ÷2 S rectangle = length× width S parallelogram = bottom× height S square = side length S rhombus = half of diagonal product S circle =πr2(r is radius) S trapezoid = (upper bottom+lower bottom) The calculation formula of cylinder × height ÷2 is as follows: lateral area formula of cylinder: lateral area = bottom perimeter × height S side = C bottom surface area formula × H cylinder: surface area =2πr2+ bottom perimeter × height S table = S bottom +C bottom× H cylinder volume formula: volume = bottom area× height V cylinder = S bottom× H cuboid volume formula: cuboid volume = And the formula is: v length = surface area formula of =abh cube: surface area = side length × side length× 6s plus = A 2× 6 cube volume formula: cube volume = side length× side length× side length. If a represents the side length of a cube, the cube volume formula is v positive = A.A