geometry formulas shapes Flashcards
1
Q
area of a rhombus
A
A=pa/2
2
Q
area of a trapezoid
A
A=1/2 (b1+b2) h
3
Q
area of a circle
A
A= πr²
4
Q
lateral area of a prism
A
A = Ph p=perimeter of base h= height
5
Q
Lateral area of a cylinder
A
LA = 2πrh
6
Q
Lateral area of a pyramid
A
LA=1/2 PHₛ
7
Q
Lateral area of a cone
A
LA=πrHₛ
8
Q
Surface Area of a prism
A
SA=Ph+2B
9
Q
Surface area of a cylinder
A
SA=2πr²+2πrh
10
Q
Surface area of a Pyramid
A
SA=1/2 PHₛ+B
11
Q
Surface Area of a cone
A
SA=πrHₛ+πr²
12
Q
Surface Area of a sphere
A
SA=4πr²
13
Q
Raito of sides equals
A
scale factor
14
Q
Ratio of areas equals
A
scale factor squared
15
Q
ratio of volumes equals
A
scale factor cubedd
