### Mathematics Formula that every secondary School student should know

Below is a list of mathematical Formula that every secondary School student should know : Square Area = s² Perimeter = 4s Trapezium Area = ½( a + b ) Circle Area = πr² Perimeter = 2πr Parallelogram Area = bh Triangle Area = ½bh Sector Area = ∅/360 X πr² Perimeter = 2r + ∅/360 x 2πr Cylinder Volume = πr²h Surface area = 2 πrh + 2πr² Cone Volume = ⅓πr²h Surface area = πrl + πr² Sphere Area = 4/3πr³ Surface Area = 4πr² Trigonometrical formula tan B = b/a tan A = a/b sin B = b /c. sin

### Mathematics formula and number system with examples.

MATHS FORMULAE Area of Circle = πr² Circumference of Circle = 2πr Length of Arc = 2πθ/360 Area of sector = πr²θ/360 Area of Trapezium = ½ (sum of parallel sides) x h Perimeter of Trapezium = sum of all sides Area of Triangle = ½bh Perimeter of Triangle = sum of all sides Area of Rectangle or Square = bh Perimeter of Rectangle or Square = 2(b+h) Total surface area of cone = πr² + πrl Volume of sphere = 4πr³/3 Volume of cylinder = πr²h Volume of cube or cuboid = bhw NUMBER SYSTEM A number

### Crazy memes that will make your day

Here are some memes that will make you laugh away your sorrow Sit back and enjoy 1.Africans why do you smile to people serving food in gatherings 2.If you're dating a last born,no matter how badly they behave;love them,cherish them and advice them because they don't have sense at all. 3.I am the type of boyfriend that will text you,and if you don't text back,I am calling and if you don't pick up,I am coming 4.You asked me for 2k I say I don't have,you go to your status to upload "Life is a circle" Even if