Formulas for cylinders and cones in the second semester:

Transverse area of cylinder = bottom circumference × height.

Surface area of cylinder = bottom area ×2+ side area.

Given the perimeter and height, find the transverse area: s side =ch.

Alphabetic formula of cylinder surface area:

S table =S bottom × 2+S side, S table = 2π R2+2π R.

h

Given the diameter and height, find lateral area: s side =πdh.

Given the radius and height, find lateral area: s side =2πrh.

The height (bottom perimeter) is calculated by knowing the lateral area.

H=S side ÷C

C=

S side ÷h

Volume of cylinder = bottom area × height

Letter formula of cylinder volume: V column =S bottom H.

、V=πr2h

Volume of cone = bottom area × height × 1

three

As we all know, the volume of a cylinder is very large: h = the bottom of a V column.

Conical volume letter formula V cone = 13S base H

、V= 13πr2

h

Volume of tube: V tube =V large -V small.

Given the volume of the cone, find its height.

H = bottom of V cone ÷ 13

Bottom of s =

V-cone 1

three

÷h

Surface area of cuboid: s table =2(ab+ah+bh)

Surface area of cube: s table =6a2.

Volume of cuboid (cube, cylinder) = bottom area × height

(Unified formula of cylinder volume)