Area formula for elementary school, area formula for elementary school

1. Square c circumference s area a side length perimeter side length 4 c = 4a area = side length side length s = a a

2. Cube v: volume a: edge length surface area = edge length edge length 6 s table = a a 6 volume = edge length edge length edge length v=a a a

3. Rectangle.

c perimeter s area a side length.

Circumference = (length + width) 2

c=2(a+b)

Area = length and width.

s=ab 4, cuboid.

v: volume s: area a: length b: width h: height 1) surface area (length and width + height + width and height) 2

s=2(ab+ah+bh)

2) Volume = length, width and height.

v=abh5 triangle.

S area A bottom H height.

Area = base height 2

s=ah÷2

Triangle height = area 2 bases.

Triangular base = area 2 high.

6 Parallelogram.

S area A bottom H height.

Area = base height.

s=ah 7 trapezoidal.

S area: A, upper bottom, b, lower bottom, H high.

Area = (top bottom + bottom bottom) height 2

s=(a+b)× h÷2

8 Circle s area c perimeter d = diameter r = radius 1) perimeter = diameter = 2 radius.

c=∏d=2∏r

2) Area = Radius Radius

9 Cylinders.

V: Volume h: High S; Base area r: bottom radius c: bottom perimeter 1) side area = bottom perimeter height.

2) Surface area = side area + bottom area 2

3) Volume = base area high.

4) Volume side area 2 radius.

10 cones.

V: Volume h: High S; Base area r: Bottom radius volume = base area height 3

Square: Side Length Side Length.

Rectangle: length and width.

Parallelogram: Base height.

Triangle: Base height 2

Trapezoidal: (top bottom, bottom bottom) height 2

Circle: Pi radius radius.

The area of the circle is = r 2

The area of the rectangle is length*width.

The formula for the area of the primary school is as follows: 1. The area of the triangle is 2 at the bottom. Formula s=a h 22, area of a square side length side length formula s=a a3, area of a rectangle length width formula s=a b

4. The area of the parallelogram is based on the height formula s=a h<>

5. The area of the trapezoid (upper bottom + lower bottom) height 2 formula s=(a+b)h 26, the area of the circle radius radius formula: s r27, the volume of the cuboid length width height formula: v=abh8, the volume of the cuboid (or cube) the bottom area of the height formula:

v=abh<>

The area formulas of primary school mathematics are: triangle area formula, rectangle area formula, square area formula, parallelogram area formula, trapezoidal area formula, circular area formula, semicircle area formula, annular area formula, etc.

1. The circumference of the rectangle = (length + width) 2;Formula: c=(a+b) 2.

2. The circumference of the square = the side length 4;Formula: c=4a.

3. The area of the rectangle = length and width; Formula: s=ab.

4. The area of the square = the length of the side and the length of the side; Formula: s=a*a.

5. The area of the triangle = the height of the base 2;Formula: s=ah 2.

6. The area of the parallelogram = the height of the base; Formula: s=ah.

7. The area of the trapezoid = (upper bottom + lower bottom) height 2;Formula: s=(ab)h2.

8. Diameter = radius 2;d=2r；Radius = Diameter 2;Formula: r=d 2.

9. Circumference of the circle = pi diameter = pi radius 2;Formula: c= d=2 r.

10. The area of the circle = pi radius radius.

11. The area of the triangle is 2 at the bottomFormula: s=ah 2.

12. The area of the square is the length of the side and the length of the side; Formula: s=a*a.

13. The area of the rectangle is long and wide; Formula: s=ab.

14. The area of the parallelogram is high at the bottom; Formula: s=ah.

15. The area of the trapezoid (upper bottom + lower bottom) is 2;Formula: s=(ab)h2.

16. Sum of internal angles: The sum of the inner angles of the triangle is 180 degrees.

17. The volume of the cuboid is length, width and height; Formula: v=abh.

18. The volume of the cuboid (or cube) is high in the bottom area; Formula: v=abh.

19. The volume of the cube is long, the edge is long, the edge is long; Formula: v=aaa.

20. The circumference of the circle is diameter; Formula: l d 2 r.

21. The area of the circle radius radius; Formula: s r2.

22. The surface (side) area of the cylinder: the surface (side) area of the cylinder is equal to the perimeter of the bottom surface times the height; Formula: s=ch= dh2rh.

23. The surface area of the cylinder: the surface area of the cylinder is equal to the circumference of the bottom surface multiplied by the height plus the area of the circle at both ends; Formula: s=ch+2s=ch+2 r2.

24. The volume of the cylinder: the volume of the cylinder is equal to the base area times the height; Formula: v=sh.

25, the volume of the cone 1 3 bottom surface volume high; Formula: v=1 3sh.

26. The law of addition and subtraction of fractions: add and subtract fractions with the same denominator, only add and subtract the numerator, and the denominator remains unchanged. Fractions with different denominators are added and subtracted, first through the fractions, and then added or subtracted.

27. Multiplication of fractions: use the product of the numerator as the numerator, and use the product of the denominator as the denominator.

28. The division of fractions: dividing by a number is equal to multiplying the reciprocal of this number.

1. The area formula of the circle

Let the radius of the circle be r and the area be s, then the area s = ·r2 ( denotes pi). That is, the area of the circle is equal to the square of the radius of the circle multiplied by the radius of the circle.

2. The area formula of the rectangle

A rectangle is composed of length and width, and its area formula is s=a*b, where s is the area of the rectangle, a is the length of the rectangle, and b is the width of the rectangle.

3. The area formula of the square

A square is made up of four sides, the four sides are equal, and its area formula is s=a, where s is the area of the square and a is the length of the sides of the square.

4. The area formula of the parallelogram

A parallelogram is a closed shape made up of two sets of parallel line segments. The area formula is s=a*h, where s is the area of the parallelogram, a is the base length of the parallelogram, and h is the height of the parallelogram.

5. The area formula of the trapezoid

If the length of the upper bottom of the trapezoid is a, the length of the lower bottom is b, the height is h, and the area is s, then the area formula of the trapezoid is s=(a+b)*h 2.

The formula for the area of the primary school is as follows: 1. The area of the triangle is 2 at the bottom. Formula s=a h 22, area of a square side length side length formula s=a a3, area of a rectangle length width formula s=a b

4. The area of the parallelogram is based on the height formula s=a h<>

5. The area of the trapezoid (upper bottom + lower bottom) height 2 formula s=(a+b)h 26, the area of the circle radius radius formula: s r27, the volume of the cuboid length width height formula: v=abh8, the volume of the cuboid (or cube) the bottom area of the height formula:

v=abh<>

1. Rectangle: rectangle area = length and width, the formula is s=ab

2. Square: square area = side length and side length, the formula is s=a2

3. Parallelogram: Parallelogram area = base height, the formula is s=ab

4. Triangle: triangle area = base height 2, the formula is s=ab 2

5. Trapezoid: trapezoidal area = (upper bottom + lower bottom) height 2, the formula is s=(a+b) h 2

6. Circle: Circle area = pi radius radius, the formula is s= r2

7. Ring: Ring area = pi (outer ring radius - inner ring radius), the formula is s = (r2-r2).

8. Sector: Sector area = pi radius half-hour draft diameter sector angle 360, the formula is s = r 2xn 360

9. Cuboid: Cuboid surface area = (length and width + length and height + width and height) 2, and the formula is s=2 (ab + ac + bc).

10. Cube: surface area of cube = edge length Ridge length 6, s=6a2

11. Sphere (positive sphere): surface area of sphere (positive sphere) = pi radius 4, s = 4 r2

1. Rectangle: rectangle area = length and width, the formula is s=ab

2. Square: square area = side length and side length, the formula is s=a2

3. Parallelogram: Parallelogram area = base height, the formula is s=ab

4. Triangle: Sanshu Angularity Area = Base Height 2, the formula is S=AB 2

5. Trapezoid: trapezoidal area = (upper bottom + lower bottom) height 2, the formula is s=(a+b) h 2

6. Circle: Circle area = pi radius radius, the formula is s= r2

7. Ring: Ring area = pi (outer ring radius scatter - inner ring radius), the formula is s=(r2-r2).

8. Sector: Sector area = pi radius radius sector angle 360, the formula is s = r 2xn 360

9. Cuboid: Cuboid surface area = (length and width + length and height + width and height) 2, and the formula is s=2 (ab + ac + bc).

10. Cube: surface area of cube = edge length Ridge length 6, s=6a2

11. Sphere (positive sphere): surface area of sphere (positive sphere) = pi radius 4, s = 4 r2

The formula for the area of the primary school is as follows: 1. The area of the triangle is 2 at the bottom. Formula s=a h 22, area of a square side length side length formula s=a a3, area of a rectangle length width formula s=a b

4. The area of the parallelogram is based on the height formula s=a h<>

5. The area of the trapezoid (upper bottom + lower bottom) height 2 formula s=(a+b)h 26, the area of the circle radius radius formula: s r27, the volume of the cuboid length width height formula: v=abh8, the volume of the cuboid (or cube) the bottom area of the height formula:

v=abh<>