Volume formula of cylinder: volume = bottom area × height. If h represents the height of a cylinder, cylinder = bottom× h = π r? , or the square of s h = π r.

Cuboid volume formula: volume = length × width × height. (The bottom area is multiplied by the height s and the bottom h) If A, B and C respectively represent the length, width and height of a cuboid, the cuboid volume formula is: V length =abc.

Volume formula of cube: volume = side length × side length × side length. (The bottom area is multiplied by the height S and the bottom H) If a is used to represent the side length of the cube, the volume formula of the cube is V = A A A = A 3.

Area formula:

Rectangular: S=ab{ rectangular area = length × width}.

Square: s = a 2 {square area = side length × side length}.

Parallelogram: S=ab{ parallelogram area = base × height}.

Triangle: S=ab÷2{ triangle area = base × height ÷2}.

Trapezoid: S=(a+b)×h÷2{ trapezoid area = (upper bottom+lower bottom) × height ÷2}.

Mathematical other volume regions

Platform volume formula: v = [above s+√ (above s and below s)+below s ]h÷3.

The formula of truncated cone volume: v = [s+s'+√ (ss')] h ÷ 3 = π h (R2+RR+R2)/3.

Surface area of sphere (positive sphere): s = 4 ∏ r 2 {surface area of sphere (positive sphere) = pi × radius× radius× 4}.

Ellipse S=π (pi) ×a×b (where a and b are the lengths of the major axis and minor axis of the ellipse, respectively).