perimeter, area and volume Flashcards
1
Q
circumference of circle =
A
π x d
2
Q
area of rectangle =
A
length x width
3
Q
area of parallelogram =
A
length x perpendicular height
4
Q
area of triangle =
A
base x height / 2
5
Q
area of trapezium =
A
a + b / 2 x height
6
Q
area of circle =
A
πr²
7
Q
perimeter of sector =
A
𝑥/360 x πd + d
where 𝑥 is size of the angle
8
Q
area of sector =
A
𝑥/360 x πr²
where 𝑥 is size of the angle
9
Q
surface area of cylinder =
A
2πr² + πd x h
10
Q
surface area of cone =
A
πr² + πrl
where l = slant height
11
Q
surface area of sphere =
A
4πr²
12
Q
volume of prism =
A
area of cross section x length
13
Q
volume of cylinder =
A
πr² x height
14
Q
volume of pyramid =
A
1/3 x base area x height
15
Q
volume of cone =
A
1/3 x πr² x height
