Answer:
If Franco wants to double the volume, he must multiply the radius and height of the original cone by ![\sqrt[3]{2}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B2%7D)
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube
Let
z-----> the scale factor
x----> the volume of the larger cone
y----> the volume of the original cone
so

we have


substitute and solve for the scale factor

------> the scale factor
If Franco wants to double the volume, he must multiply the radius and height of the original cone by ![\sqrt[3]{2}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B2%7D)