Formula Essentials Flashcards
How To find the area of a Rectangle
Base * Height
How To find the area of a Triangle
1/2BaseHeight
How To find the area of a parallelogram
Base*Height
How To find the area of a Trapezium
1/2(a+b)*Height — [“a” and “b” are variables to represent the two bases of a trap.]
How To find the area of a Circle
Pi*Radius^2
How To find the circumference of a Circle
Pi2Radius
How To find the volume of a Prism
Cross-section*Length
How To find the area of a Cylinder
PiRadius^2Height
How To find the area of a Rectangular based Pyramid
1/3lengthwidth*height
How To find Sin A
oposite/ hypotenuese
How To find Cos A
adjacent/hypotenuese
How To find Tan A
opposite/adjacent
Sine Rule
a/SinA=b/SinB=c/SinC
Cosine Rule
a^2=b^2+c^2-2bcCosA
How To find the area of any triangle (using SIN)
1/2*abSinC
Pythagoras Theorem
a^2+b^2=c^2
Formula to find speed (distance and time)
Distance= speed*time
Formula to find density (mass and volume)
Mass= density*Volume
Formula to find pressure (force and area)
Force= pressure* area
what is P(A)
it means the probability of outcome A
what is P(B)
it means the probability of outcome B
what does(A OR B) equal to
P(A)+P(B)-P(A&B)
what does(A AND B) equal to
P(A given B)P(B)
How to find the value of investment
P(1+R/100)^n — P = principle amount, r = interest rate, n = number of times the investment is compunded
What is the quadratic formula
x = (-b +/- (b^2-4ac)^1/2) / 2a
Exterior angles in a polygon?
360/No sides
