General equation of circle Note:
Parabolic standard equation
Straight prism side area oblique prism side area
Regular pyramid side area Regular prism side area
Surface area of frustum of a cone lateral area ball
Cylindrical side area conical side area
Lateral area of a straight prism S=c*h lateral area of an oblique prism s = c' * h.
Regular pyramid side area Regular prism side area
Surface area of ball
The lateral area of the frustum of a cone is S = 1/2(c+c')l = pi(R+R).
Lateral area of cylinder S=c*h=2π*h lateral area s = 1/2 * c * l = π * r * l of cone.
The arc length formula l=a*r a is the radian number r > of the central angle; 0 sector area formula s= 1/2*l*r
Cone volume formula V= 1/3*S*H cone volume formula
Oblique prism volume V=S'L Note: where s' is the straight cross-sectional area and l is the side length.
Cylinder volume formula V=s*h cylinder v = π * r 2hv: volume h: height s; Bottom area r: bottom radius c: bottom perimeter
(1) Transverse area = bottom circumference × height.
(2) Surface area = lateral area+bottom area ×2
(3) Volume = bottom area × height
(4) volume = lateral area ÷2× radius l=a*r a is the radian number of the sector area formula with the central angle r > 0°.
Cone volume formula
Oblique prism volume V=S'L Note: where s' is the straight cross-sectional area and l is the side length.
Cylinder volume formula V=s*h cylinder rectangular circumference = (length+width) × 2 c = 2 [a+b]
Circumference of a square = side length ×4 c=4a
Area of rectangle = length× width s=ab
Area of a square = side length × side length s=a?
Area of triangle = base × height ÷2
Given that the base of a triangle is a and the height is h, then S=ah/2 parallelogram area = base × height.
Trapezoidal area = (upper bottom+lower bottom) × height ÷2
Diameter =d=2r
Circumference =πd= 2πr
Area of circle = πr?
The surface area of a cuboid = (length× width+width× height+height× length )× 2s = 2 [AB+BC+CA]
Volume of cuboid = length× width× height v=abc
Surface area of cube = side length × side length× ×6 s=6a?
Volume of cube = side length × side length × side length v=a?
Lateral area of cylinder = circumference of bottom circle × height s=ch.
Surface area of cylinder = upper and lower bottom area+side area.
Volume of cylinder = bottom area × height v=sh
Volume of cone = bottom area × height ÷3 v=sh÷3
Cylinder volume = bottom area × perimeter c and area s of high name symbol.
The side length of a square C=4a S=a?
The length of a side and b side of a rectangle C=2(a+b) S=ab.
Triangle a, b, c- has three sides, where s=(a+b+c)/2 S=ah/2.
Height of h-a edge =ab/2×sinC.
Half of the circumference of s =[s(s-a)(s-b)(s-c)] 1/2.
A, b, c- internal angle = a 2sinbsinc/(2sina)