Maths Formulas

By Abhishek Tomar on Aug 31, 2009 with Comments 0

Triangle Perimeter = S₁ + S₂ + S₃
Triangle Area = 1⁄2bh
Equilateral Triangle = √3/4 * a²
Hight of Equilateral Triangle = √3/4 * a

Square Perimeter = 4S
Square Area = S × S, or S²

Rectangle Perimeter = 2(b + h), or 2b + 2h
Rectangle Area = bh, or lw

Parallelogram Perimeter = 2(l + w), or 2l + 2w
Parallelogram Area = bh

Trapezoid Perimeter = b₁ + b₂ + S₁ + S₂
Trapezoid Area = 1⁄2h(b1 + b2)

Circle Circumference = 2πr, or πd
Circle Area = πr²

Cube Volume = S x S x S = S³
Surface Area = S x S x 6 = S² X 6
Diagonal of Cube = √3a²

Sphere Volume = 4/3 πr³
Surface Area = 4πr³

Cylinder Volume = πr²h
Total Surface Volume = 2( πrh )
Total Covered Surface Area= (2πrh + πr²)

Cone Volume =1/3 πr²h
Total Covered Surface Area = πr²l
Total Surface Area= πr²l + πr²

Rectangular Prism Volume = l x w x h
Surface area = 2(lw) + 2(lh) + 2(wh)

Pythagorean theorem a² + b² = c² (The sum of the square of the legs of a right triangle equals the square of the hypotenuse. This is known us the Pythagorean theorem)

Apollonius Theorem 2 X (median)² = 2(1/2 of third side)² = Sum of squares of the other two sides