S region

length of a side

Perimeter = side length ×4c=4a

Area = side length × side length s=a×a

2. Cube: Volume: Volume

A: Edge length

Surface area = side length × side length ×6

S table =a×a×6

body

Product = side length × side length× side length

v=a×a×a

3. Rectangular:

C circumference

S region

length of a side

Circumference = (length+width) ×2

c=2(a+b)

Area = length × width

s=ab

4. Cuboid

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

5. 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

6. parallelogram: s area

Adidas

H height

Area = bottom × height

S = ah

7. Trapezoid: S region

A shangdi

Shadi

H height

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

s=(a+b)×h÷2

eight

Circle: s plane

C circumference

∏

D= diameter

R= radius

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

c =∏d = 2r

(2) area = radius × radius×∈

9. Cylinder: V volume

tall

Student: The bottom area

R: bottom radius

C: perimeter of bottom surface

(1) lateral 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: v volume

H height

Bottom region

R bottom radius

Volume = bottom area × height ÷3