Measurement- S.Area & Volume Flashcards
1
Q
Define surface area
A
Total area of all faces on a 3D shape
2
Q
What units is S.A measured in?
A
mm^2, cm^2, m^2
3
Q
How many faces does a cube have?
A
6
4
Q
How many faces does a triangular prism have?
A
5
5
Q
What is a net?
A
A 2D shape to represent the faces of a 3D shape
6
Q
S.A of a cube
A
S.A = 6s^2
7
Q
S.A of a rectangular prism
A
S.A= 2lw + 2wh + 2lh
8
Q
S.A of cylinder
A
S.A= 2pi x r^2 + 2pi x rH
9
Q
S.A of sphere
A
S.A= 4 pi x r^2
10
Q
S.A of closed hemisphere
A
S.A= 3 x pi x r^2
11
Q
S.A open hemisphere
A
S.A= 2 x pi x r^2
12
Q
To convert cm^2 to m^2
A
Divide by 100^2
13
Q
To convert cm^2 to mm^2
A
Multiply by 10^2
14
Q
Define volume
A
Volume is the amount of space in a 3D shape measured in cubic units
15
Q
General formula for Volume of Prism
A
V= Abase x Height
