Areas of 2D and 3D Shapes Flashcards
1
Q
Circle
A
π × r^2
2
Q
π × r^2
A
Circle
3
Q
Triangle
A
½ × b × h
4
Q
½ × b × h
A
Triangle
5
Q
Parallelogram
A
b × h
6
Q
b × h
A
Parallelogram
7
Q
Trapezium
A
½(a+b) × h
8
Q
½(a+b) × h
A
Trapezium
9
Q
Ellipse
A
πab
10
Q
πab
A
Ellipse
11
Q
Surface area of a cube
A
6a^2
12
Q
6a^2
A
Surface area of a cube
13
Q
Rectangular prism
A
2(wl+hl+hw)
14
Q
2(wl+hl+hw)
A
Rectangular prism
15
Q
Cylinder
A
2πr(r + h)
16
Q
2πr(r + h)
A
Cylinder
17
Q
Cone
A
πr(r + l)
18
Q
πr(r + l)
A
Cone
19
Q
Sphere
A
4πr^2
20
Q
4πr^2
A
Sphere
21
Q
Hemisphere
A
3πr^2
22
Q
3πr^2
A
Hemisphere
23
Q
Area of a sector
A
1/2 * r^2 * pheta
24
Q
1/2 * r^2 * pheta
A
Area of a sector
25
Q
Arc length of a sector
A
r * pheta
26
Q
r * pheta
A
Arc length of a sector
27
Q
Surface area of a 3d sector
A
2cross sectional area + 2side rectangles + 1 curved end rectangles
28
Q
2cross sectional area + 2side rectangles + 1 curved end rectangles
A
Surface area of a 3d sector
