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# Volume of spheres

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A maximum diameter of a bowling ball is 8.6 inches what is the volume to the nearest tenth of a bowling ball with this diameter

Nov 5, 2015

#2
+10

......if it doesn't have any finger holes drilled in it !   ha

Nov 5, 2015

#1
+104793
+10

Vsphere  =(4/3)pi *(d/2)^3   = (4/3)pi * (8.6 / 2)^3  =   about 333 in^3   [to the nearest tenth]

Nov 5, 2015
edited by CPhill  Nov 5, 2015
#2
+10

......if it doesn't have any finger holes drilled in it !   ha

Guest Nov 5, 2015
#3
+104793
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LOLOLOL!!!!!

Good point......we'll consider it "pre-drilled".........only because I couldn't find any "finger hole" formulas to reduce the volume.......

I may see if Sir LA-Tex knows  of any such formulae........he's pretty good at researching the obscure........!!!!

Stay tuned.......

Nov 6, 2015
#4
+105606
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The holes are near enough to cylinders so the formula is easy.

Here is a video that gives you the dimensions AND shows you how to drill the holes.

PLUS it is in imperial measurments so you lovely US people should be right at home :))

Nov 6, 2015
#5
+104793
+5

Thanks for that video, Melody........

Unfortunately.........Sir La-Tex    doesn't fully grasp "imperial" measurements......

He deals easily with "imperial minims,"  however........

Also.....the problem with trying to ascertain  a good estimate for "thumb and finger hole volume" is that this is equivalent to trying to determine how much of a pie is displaced by having one's thumb and fingers in it..........

Thus, there is probably some other  "pie" component to our spherical volume estimation.......

Nov 6, 2015
#6
+105606
+5

Yes CPhill,  You have made many very good observations here.

You know, fingers in pies is something I expect Sir Phill La-Tex is quite familiar with.

Chimps so like to put their fingers in their pies ..........

I wonder how that formula might go.

$$V=\displaystyle \int_0 ^{chimp\; digit\;l ength}\left(\pi r^2h-6\frac{\delta\pi}{\delta r}\right)dh$$

I had to subtract the 6 partial pies because Sir La-Tex had 5 of his friends over.

There was Lancelotlink, .....   I can't remember who the others were.

There was that brilliant female one, I have forgotten her name.....

Anyway, all chimps look the same to me.

Nov 6, 2015