Would it be y2 ? idk im not sure but i tried
Answer:
A.
Step-by-step explanation:
Surface area of the original cone
When, radius is quadrupled and slant height is reduced to one sixth
Plug the above values of r and
in equation (1), new surface area becomes:

Equivalent ratio means equal in value
18:4 = 9:2 = 36:8
Answer:
Step-by-step explanation:
That is the vertex form of a quadratic equation