Question

more help

Answer 1

V=r^2*h/3 so plug in our terms and solve for r

Answer 2

we know that the value is 18, so
V= 18
also we know the height
h= 4
but one thing that we doesn't know is the r^2 or \[r^2 \]
so this is a bt of basic algebra
\[18= r^2 4/3 \]

Answer 3

use the cross multiplication