Studied by 20 peopleArea of a quadrilateral
base x height
Area of a triangle
½ base x height
Area of a trapezium
½ (a + b) x height
a and b are the two parallel sides
Area of a circle
A = pie x radius squared
Circumference of a circle
circumference = 2 x radius squared
Area of a sector
x = angle written in sector
x/360 x area of full circle
Length of arc
x = angle written in sector
x/360 x circumference of full circle
Perimeter of a sector
length of arc + 2r
Surface area of a cylinder
2 x pie x radius x height + 2 x pie x radius squared
Volume of cuboids and cubes
volume = length x width x height
Volume of prisms
Volume = area of cross section x length
Area of a sphere
4 x pie x radius squared
Volume of a sphere
4/3 x pie x radius cubed
Area of a cone
4 x pie x radius squared
Volume of a cone
1/3 x pie x radius squared x height
Note
Flashcard