Let
be the radius of the cone's base and
the slant height.
The surface area of a cone is
If the radius is quadrupled (
) and the slant height scaled by a factor of
, then the new area is
3x2 x -3b
6-3b
Hope this helps
We have a piecewise function.
Therefore, to find the function, we must evaluate each domain separately.
We have then:
For 
:
The function for this domain is:
For 
:
The function for this domain is:
Where,
Substituting:
For 
:
The function for this domain is:
Answer:
38.5sqft
Step-by-step explanation:
If we have the 2 shorter sides of a right triangle, we can compute the area as:
A = ab/2
A = 7ft * 11ft / 2 = 77sqft/2 = 38.5sqft
One cubic foot of sand should be $11.25. You can find this answer by dividing the first price by 3, because there are 3 feet in a yard.
