Formula to remember Flashcards
Area of a trapezium
1/2 (a+b) x h
Area of a circle
πr^2
Area of a triangle
1/2 x base x height
Circumference of a circle
π x diameter
Volume of a cuboid
length x height x width
Surface area of a sphere
4 x π x r^2
Volume of a sphere
4/3 x π x r^3
Surface area of a cylinder
(2 x πr^2) + (π x D x h)
ie, the area of both circles plus the area of the rectangle which sides are the same as the circle’s diameter
Volume of a cylinder
π x r^2 x H
ie the area of the circle times the height
Surface area of a cone
(π x r^2) + ( π x r x -/r^2 + h^2)
-/ = square root
Volume of a cone
4/3 x πr^2 x h
Pythagorus
a^2 + b^2 = c^2
Speed
Speed = distance / time
S D T
Equation of a line
What do m and c stand for
Y = MX + C
m= gradient c= intercept
How to find the gradient
The difference in Y divided by the difference in X
y{2}-y{1} / x{2}-x{1}
