Is it possible to measure the volume or the radius of a sphere without using PI.?

Answer 1

The two answers given so far cover the question. Halo's answer of "Nope" applies if Numbercruncher really means "Is it possible to calculate the volume when the radius is known, or vice versa, without using pi?" Anything that avoids the formula

V = (4/3) pi r^3

can be only an approximation, no matter how accurate.

But if the question is meant literally, then yes, the volume can be measured by immersing the sphere in liquid and measuring the volume displaced, and the radius can be measured as the distance between two vertical parallel planes just touching the sphere on opposite sides.

Answer 2

The answer is yes to both

For the volume: fill the sphere with water and dump the water out of it into a square or rectangle container, and measure the lenght , depth, and width of the water in the container with a ruler, and do straight math, it will do the rest, For the radius of the sphere: take a ruler and measure the diameter of the sphere and divided it by 2 and that is it radius

Hope this helps

Answer 3

for the volume you need pi

for the radius, you do not need pi

Answer 4

yes
volume bydisplacement of water
diamete can be measured by putting it between two blocks
radius=1/d

Answer 5

Nope.

Answer 6

no sorry...