+0

# cylinders

0
61
1
+331

What is the radius, in inches, of a right circular cylinder if its lateral surface area is $3.5$ square inches and its volume is $3.5$ cubic inches?

Mar 1, 2021

#1
+283
0

Hint: set up a system of equations:
$$2\pi r h=3.5\\ \pi r^2h=3.5$$

Divide the second equation by the first one:

$$\frac{\pi r^2h}{2\pi r h}=1\\$$

then, cancel out like terms.

Can you take it from there?

Mar 1, 2021