Given:
The figures cylinder, cube, cone, and pyramid.
To find:
The formula of volume for the given figures.
Solution:
Volume of a cylinder is:

Where r is the radius and h is the height.
Volume of a cube is:

Where a is side length of cube.
It is also written as:

Where l is length, w is width, h is height and
.
Volume of a cone is:

Where r is the radius and h is the height.
Volume of a pyramid is:

Where B is the base area and h is the height.
Therefore the table of formulae is shown below:
Figure Volume formula
Cylinder 
Cube 
Cone 
Pyramid 
The answer would be A. because 30 is how many she did but then h is the variable we are trying to figure out like the h can be any letter it just is there to show that the "person" does not know what the number is. Hope this helped!
Answer:
Step-by-step explanation:
1). ∠7 ≅ ∠ 2 (alternate exterior)
m∠7 = m∠2 = 30°
2). ∠4 and ∠1 are supplementary angles
m∠1 = 180° - 72° = 108°
Answer:
23
Step-by-step explanation:
23