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# Complete set of primary school mathematical definition theorem formulas

Complete set of primary school mathematical definition theorem formulas

Complete set of primary school mathematical definition theorem formulas

1. Area of triangle = base × height ÷ 2 Formula: S = a × h ÷ 2

2. Area of a square = side length × side length formula: S = a × a

3． Area of rectangle = length × width Formula: S = a × b

4． Area of parallelogram = bottom × height Formula: S = a × h

5. The area of the trapezoid = (top bottom + bottom bottom) × height ÷ 2 Formula: S = (a + b) h ÷ 2

6. Sum of internal angle: Sum of internal angle of triangle = 180 degrees

7. Volume of cuboid = length x width x height Formula: V = abh

8. Volume of cuboid (or cube) = bottom area × height Formula: V = abh

9. Volume of cube = edge length × edge length × edge length formula: V = aaa

10． The circumference of a circle = diameter × π Formula: L = πd = 2πr

11. The area of a circle = radius × radius × π Formula: S = πr2

12. Table (side) area of a cylinder: The table (side) area of a cylinder is equal to the perimeter of the bottom surface times the height

Formula: S = ch = πdh = 2πrh

13. Surface area of the cylinder: The surface area of the cylinder is equal to the perimeter of the bottom surface times the height plus the area of the two circles

Formula: S = ch + 2s = ch + 2πr2

14. Volume of a cylinder: The volume of a cylinder is equal to the base area multiplied by the formula: V = Sh

15. The volume of the cone = 1/3 bottom surface × product height formula: V = 1 / 3Sh

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