square

C circumference

S region

length of a side

Perimeter = side length ×4

{C=4a}

Area = side length × side length

{S=a×a}

2

cube

Five: volume

A: Edge length

Surface area = side length × side length ×6

{S table =a×a×6}

Volume = side length × side length × side length

{V=a×a×a}

three

rectangle

C circumference

S region

length of a side

Circumference = (length+width) ×2

{C=2(a+b)}

Area = length × width

{S=ab}

four

Cubic

Five: volume

Student: Area

A: Dragon.

B:

extensive

tall

(1) Surface area (L× W+L× H+W× H) ×2

{S=2(ab+ah+bh)}

(2) Volume = length × width × height

{V=abh}

five

triangle

S region

Adidas

H height

Area = bottom × height ÷2

{ s = ah \2 }

Height of triangle = area

× 2 base

Triangle base = area

× 2 Current height

six

parallelogram

S region

Adidas

H height

Area = bottom × height

{s = ah}

seven

trapeziform

S region

A shangdi

Shadi

H height

Area = (upper bottom+lower bottom) × height ÷2

{ s =(a+b)× 1

h \2 }

eight

Round; circular

S region

C circumference

∏

D= diameter

R= radius

(1) circumference = diameter ×∏=2×∏× radius

{C=∏d=2∏r}

(2) area = radius × radius×∈

nine

cylinder

Five: volume

tall

s； Jianping

R: bottom radius

C: perimeter of bottom surface

(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.

10

cone

Five: volume

tall

s； Jianping

R: bottom radius

Volume = bottom area × height ÷3

Area of triangle: base × height ÷2

The base of a triangle:

Area ×2÷ Height

Height of triangle:

Area × 2 Jidi

Area of parallelogram: base × height

Height of parallelogram:

zone

Jiandi

Base of parallelogram:

The area is very high

Trapezoidal area: (upper bottom+lower bottom) × height ÷2

Upper bottom of trapezoid: area ×2÷ height-lower bottom.

Trapezoidal bottom: area ×2÷ height-upper bottom

Trapezoidal height:

Area ×2÷ Height-Upper bottom