formulas Flashcards
1
Q
area of a full circle
A
πr^2
2
Q
area of a semi circle
A
πr^2
——
2
3
Q
area of a quadrant
A
πr^2
——
4
4
Q
area of a triangle
A
base x perpendicular height
——————————
2
5
Q
area of a trapezium
A
(a + b) x height
———————
2
6
Q
area of a sector
A
(πr^2) x (θ ÷ 360)
7
Q
volume of a pyramid / cone
A
(area of base) x height
——————————-
3
8
Q
volume of a sphere
A
4
—— x πr^3
3
9
Q
volume of a prism
A
cross sectional area x length
10
Q
volume of a cylinder
A
πr^2 x height
11
Q
perimeter of a semi circle
A
(πd ÷ 2) + d
12
Q
perimeter of a sector
A
(πd) x (θ ÷ 360) + d
13
Q
perimeter of a quadrant
A
(πd ÷ 4) + d
14
Q
circumference of a circle
A
πd
15
Q
arc length
A
πd x (θ ÷ 360)
