Math Formulas Flashcards
What is the formula to calculate profit percentage?
Profit percentage =(Profit/cost price) ×100
What is the formula for calculating the loss percentage?
Loss percentage=(loss/cost price) ×100
The formula for the perimeter of a rectangle is?
(L+w) × 2
Pythagoras’ Theorem
a² + b² = c²
What is the formula for the perimeter of a square?
4× side
What is the formula for the perimeter of a polygon
Perimeter=numberofsides×lengthofoneside
The formula for the circumference of a circle.
C=2 (3.14) (r²)
What is the formula for the diameter of a circle
D=2r
What is the formula for the area of a circle?
Area= (3.14) (r²)
The formula for the area of a rectangle
A= L×W
The length of a rectangle (if A and W are given)
L= a/w
The width of a rectangle (if A and L are given)
W= a/l
The formula for the area of a triangle
A= ½b×h
The formula for the perimeter of a triangle
P=a+b+c
The formula for the area of a semicircle
A=½(3.14) (r²)
The formula for the perimeter of a semicircle
P= r (3.14+2)
The formula for the radius of a semicircle (if the area is known)
R=(squared) 2a/3.14
The formula for the area of a traqezium
A=½×(a+b)×h
The formula for the perimeter for a trapezium
P=a+b+c+d
The formula for the height of a trapezium ( if A and Bs are given)
H= 2a/a+b
The formula for the area for a ¾ circle
A=(¾×3.14×r²)
The formula for the area of half a triangle
A=½×b×h
The formula for the area of a ¼ circle
A= ¼×3.14×r²
The formula for the volume of a rectangular prism
V=L×W×H
The formula for the volume of a kite shaped prism
V=a×h
The formula for the volume of a triangular prism
V=A(base)×h
The formula for the area of a triangular base
A=½×b×h
The formula for the volume of a cylinder
V= 3.14×r²×h
The formula for the volume of a pyramid with a square base
V=⅓×s²×h
The formula for the volume of a pyramid with a rectangular base
V=⅓×l×w×h
The formula for the volume of a pyramid with a hexagonal base
V=Abase×h
Volume of a cone
⅓×3.14×r²×h
The volume of a sphere
V=4/3×3.14×r³
