CHARTS & TABLES Formulas and Theorems
CHARTS & TABLES Formulas and Theorems
Formulas and Theorems
Area
Circle
Area = π×the square of the radius
A=πr^2
Parallelogram
Area = base ×height
A=bh
Rectangle/Square
Area = length ×width
A=lw
Rhombus
Area = (length of diagonal 1 ×length of diagonal 2) ÷2
A=d 1 d 2 ÷2
Surface of a sphere
Area = π×square of the diameter
A=πd^2
Surface of a cylinder
Area = 2 ×π×square of the radius plus 2 ×π×the radius ×the height
A= 2πr^2 + 2πrh
Trapezoid
Area = height ×length of each parallel side aand b÷2
A=h(a+b)÷ 2
Triangle
Area=base×height÷2
A=bh÷ 2
Binomial Square Theorem
(a+b)^2 =a^2 + 2ab+b^2
and
(a–b)^2 =a^2 – 2ab+b^2
Circumference
C= 2πr
Diagonals in a polygon
d=n(n– 3)
2
(continues)