RepeatMe
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Basic formulas
Basic school formulas: what to find → the formula. Official RepeatMe collection; curated and edited by the editorial team.
Что внутри
- Area of a square
- a²
- Area of a rectangle
- a·b
- Area of a triangle
- ½·a·h
- Area of a parallelogram
- a·h
- Area of a trapezoid
- ½·(a+b)·h
- Area of a rhombus by diagonals
- ½·d₁·d₂
- Area of a circle
- π·r²
- Circumference of a circle
- 2·π·r
- Perimeter of a square
- 4·a
- Perimeter of a rectangle
- 2·(a+b)
- Pythagorean theorem
- a²+b²=c²
- Volume of a cube
- a³
- Volume of a rectangular box
- a·b·c
- Volume of a cylinder
- π·r²·h
- Volume of a cone
- ⅓·π·r²·h
- Volume of a sphere
- ⁴⁄₃·π·r³
- Volume of a pyramid
- ⅓·S·h
- Surface area of a sphere
- 4·π·r²
- Lateral surface of a cylinder
- 2·π·r·h
- Speed in uniform motion
- s/t
- Distance in uniform motion
- v·t
- Density of a substance
- m/V
- Discriminant of a quadratic
- b²−4·a·c
- Roots of a quadratic equation
- (−b±√D)/(2·a)
- Arithmetic mean of two numbers
- (a+b)/2
- Sum of angles of a triangle
- 180°
- Sum of angles of a quadrilateral
- 360°
- Area of a circular sector
- ½·r²·α