geometry Flashcards
1
Q
define pythagoras’ theorem
A
a² + b² = c²
a and b = length of shorter sides
c = hypotenuse
for right angles triangles only
2
Q
describe the area of a rectangle
A
a = l x w
area = length x width
3
Q
describe the area of a triangle
A
a = 1/2 x b x h
area = 1/2 x base x height
4
Q
describe the area of a circle
A
a = πr²
area = pie x radius²
5
Q
describe the surface area of a cube
A
sa = 6a²
surface area = 6 x length of one side²
6
Q
describe the volume of a cube
A
v = a³
volume = length of one side³
7
Q
describe the volume of a cylinder
A
v = πr²h
volume = pie x radius² x height
