1 km =1000m1m =1decimeter/decimeter =10cm1m =10cm/kloc-.

Area unit conversion:

1 ha = 10000 m2 1 m2 = 1 m2 = 1 m2 =/00 cm21cm2 = 100 mm2.

Volume (volume) unit conversion:

1 m3 = 1000 m3 1 m3 = 1000 cm3 1 m3 = 1 liter 1 m3 = 1 ml/kloc-.

Weight unit conversion:

1t = 1000kg 1kg = 1000g 1kg = 1kg。

Currency unit conversion:

RMB unit conversion: 1 yuan = 10 angle 1 angle = 10 minute 1 yuan = 100 minute.

Time unit conversion:

1 century = 100 1 year =65438+ February.

The big month (3 1 day) has1\ 3 \ 5 \ 7 \ 8 \10 \12. Small months (30 days) have 4\6\9\ 1 1.

1 day =24 hours 1 hour =60 minutes 1 minute =60 seconds 1 hour =3600 seconds.

Rectangular perimeter = (length+width) × 2

Square perimeter = side length × 4

Rectangular area = length × width

Square area = side length × side length

Triangle area = base × height ÷ 2

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

Parallelogram area = base × height

Cuboid volume = length × width × height

Cubic volume = side length × side length × side length

Cuboid or cube volume = bottom area × height

Surface area of cube = side length × side length × 6

Surface area of cuboid = (length× width+length× height+width× height) × 2.

Surface area of cylinder = area of side surface of cylinder+area of two bottom surfaces = л DH+2 л r?

Transverse area of cylinder = л DH

Cylinder volume = bottom area × height = л r? h

Cone volume = cylinder volume ÷ 3 = sh ÷ 3