Maths Formulas Flashcards
1
Q
Perimeter
A
Add all sides
2
Q
Cirumference (Diameter)
A
C =piD
3
Q
Circumference (Radius)
A
C=2rpi
4
Q
Circumference Semi Circle (Diameter)
A
C = (piD/2)+D
5
Q
Circumference Semi Circle (Radius)
A
C= (2pir/2)+2r
6
Q
CircumferenceQuarter Circle
A
C=(2pir/4)+2r
7
Q
Area of Rectangle
A
A=LW
8
Q
Area of Square
A
A=lxl
9
Q
Area of Triangle
A
A=1/2bh
10
Q
Area of Parallelogram
A
A=bh
11
Q
Area of Circle
A
pirsquared
12
Q
Area Annulas
A
pirsquared (larger circle)- pirsquared (smaller circle)
13
Q
Area of semicircle
A
pi x r x r / 2
14
Q
Area of quarter circle
A
pi x r x r / 4
15
Q
Area of Trapezium
A
1/2(a+b)h
