Calculation formula of mathematical graphics in primary schools

1. square: c perimeter s area a side length perimeter = side length? 4C=4a Area = side length? Side length S=a? a

2. cube v: volume a: side length surface area = side length? Side length? 6S table =a? Answer? 6 volume = side length? Side length? Side length V=a? Answer? a

3. Rectangular:

Perimeter area side length

Circumference = (length+width)? 2

C=2(a+b)

Area = length? extensive

S=ab

4. Cuboid

V: volume s: area a: length b: width h: height.

(1) surface area (length? Width+length? Height+width? High)? 2

S=2(ab+ah+bh)

(2) Volume = length? Wide? high

V=abh

5. Triangle

S area a bottom h height

Area = bottom? Tall? 2

S = huh? 2

Height of triangle = area? 2? bottom

Triangle base = area? 2? high

6. Parallelogram

S area a bottom h height

Area = bottom? high

S = ah

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