Math Test Flashcards
What are the sides of a solide called?
Faces
What are the segments where faces meet?
Edges
What is a point where 3 or more edges meet?
Vertexes
What is surface area?
its the combined area of all the faces in a solid
What is volume?
Volume is the measurement of the space that a solid occupies
What is SA measured in
Square measurements
What is V measured in ?
In cubic measurements
What is the formula for the surface area of a prism?
2B+Ph.
2B=the area of both of the bases
P=the perimeter of one of the bases
h=the height of the solid
What is the surface area formula of a cylinder?
2B+Ch =. 2pi r squared +2pi r h
What is the difference between slant height and height?
Height is the distance between the vertex and the base,slat height (l) is the height of a face that isn’t the base
What is the surface area formula for a piramid?
B+1/2Pl
B:area of base
1/2Pl:number of triangles times the area of a triangle
What is the formula of surface area of a cone?
Pi r squared+pi r l
What if the Volume formula for a prism?
B*h (area of base times height )
OR
Length times with times height
What is the volume formula for a cylinder?
B*h
OR
Pi r squared times h
Aka area of base times height
What Is the volume formula of a piramid ?
1/3 Pl
Base of the piramid times height divedied by 3
What is the volume formula for a cone?
1/3Bh
OR
1/3 pi r squared x h
What is a proportion ?
It’s an equation that stated that two ratios are equivalent
What is a direct proportion?
A direct proportion is when both variables increase by the same amount
What’s an inverse proportion?
It’s when one variable increases proportionally to the second variable that decreases
What is the constant (K)
The constant is the amount that. The variables increase proportionally by
What is the formula for K in a direct proportion
K: y/x
What is the formula for K in an inverse proportion?
K=y*x
