Question

9 mVolume = 75 T mm?Radius

Answer 1

$V\text{ = }\frac{1}{3}\pi\cdot r^2\cdot h$

In this case we know that V = 75(pi) mm^3 and h = 9m = 9000mm (to put everything in mm), so we can write:

$75\pi=\frac{1}{3}\pi\cdot r^2\cdot9000$

Now we have to solve this equation for r:

Since we have pi on both sides of the equation, we can eliminate it:

(75)(3) = 9000 r^2

r^2 = 225/9000 = 0.025

r = sqrt(0.025) = 0.1581

r = 0.1581

Answer:

r = 0.1581 mm