The volume formula of the ball arranges the volume formula of the ball: the volume of the ball with radius r.
The formula is: v = (4/3) π r 3 (three quarters times π times the radius of the cube).
V = (1/6) π d 3 (one sixth times π times the third power of diameter)
What other volume formulas and sector area formulas are there? S = 1/2 * L * R。
Cone volume formula: V= 1/3*S*H
Cone volume formula: V= 1/3*pi*r2h.
Oblique prism volume: V=S'L Note: where s' is the straight cross-sectional area and l is the side length.
Cylinder volume formula: V=s*h
The common junior high school math formula is 1. There is only one straight line after two o'clock.
2. The line segment between two points is the shortest.
3. The complementary angles of the same angle or equal angle are equal.
4. The complementary angles of the same angle or equal angle are equal.
5. There is one and only one straight line perpendicular to the known straight line.
6. Of all the line segments connecting a point outside the straight line with points on the straight line, the vertical line segment is the shortest.
7. Parallelism axiom: After passing a point outside a straight line, there is one and only one straight line parallel to this straight line.
8. If two straight lines are parallel to the third straight line, the two straight lines are also parallel to each other.
9. The same angle is equal and two straight lines are parallel.
10. The internal dislocation angles are equal and the two straight lines are parallel.
1 1. The inner angles on the same side are complementary and the two straight lines are parallel.
12. Two straight lines are parallel with the same included angle. .
13. Two straight lines are parallel and the internal dislocation angles are equal.
14. Two straight lines are parallel and complementary.
15. Theorem: The sum of two sides of a triangle is greater than the third side.
16. It is inferred that the difference between two sides of a triangle is smaller than the third side.
17. The sum of the interior angles of the triangle and the sum of the three interior angles of the theorem triangle are equal to 180.
18. It is inferred that the two acute angles of 1 right triangle are complementary.
19. Inference 2 An outer angle of a triangle is equal to the sum of two non-adjacent inner angles.
20. Inference 3 The outer angle of a triangle is larger than any inner angle that is not adjacent to it.