formula Flashcards
1
Q
volume of a cylinder
A
π r² h
2
Q
volume of a cuboid/ cube
A
Length × Width × Height
3
Q
volume of a triangular prism
A
Area of cross section (triangle) × Length
4
Q
volume of a square based pyramid
A
⅓ × Area of base ×Height
5
Q
volume of a cone
A
⅓ x π x r² x h
6
Q
volume of a sphere
A
4/3 x π x r³
7
Q
Pythagoras theorem
A
A² + B² = C²
where c is the hypotenuse
8
Q
Percentage change
(percentage increase
or decrease)
A
difference/original x 100
9
Q
Sum of interior angles
of a polygon
A
180 (n-2)
no of sides
10
Q
Exterior angle of a
polygon
A
360/n
no of sides
11
Q
circumference of circle
A
pi x diameter
12
Q
circumference of arc
A
(pi x diameter) x angle of arc /360
