For some of these, I estimate the number of items the base and then multiply by the height. Is there a better strategy, especially for items that don’t fit into distinct layers?
Original post crossposted from !dailygames@lemmy.zip: https://piefed.social/post/1205620
Guess here: 🔗 https://estimate-me.aukspot.com/archive/2025-08-29
If you’d like to discuss your guesses, please use spoiler tags!
- Set lower bound by counting how many are visible in the photo
- Grow disinterested
- Guess some number above the result from step 1
Start with the bottom, count how many are visible on the lowest layer. This gives you half the circumference of the lower end.
Repeat for the highest part of the cup that is still cup, not above the line.
Multiply each of these by 2 and you have the circumferences of each end of the cut cone.
Rearrange the circle area formula to get the radius from circumference and you have the radius of each end of the cone.
Now use the cut cone formula to calculate the volume in terms of hazelnuts.
Next, take the radius of the top circle and estimate how far above that the highest nut is. Use whatever formula seems more appropriate, in this case maybe just a right angle triangle formula with a full rotation, to estimate the volume of the top.
Sum that together with the conic volume and you have a good estimate.
My estimate, at least 3 hazelnuts.
Good luck
licks screen
210
You don’t have to actually lick it, you can just imagine
I did
V=pi×r²×h
and estimated:
r=4 (from some at the top left)
h=12
This gave 603. The link said too high, so realized I’d neglected packing factor. Google said that spheres typically pack at 64% efficiency, so I guessed 386. Too low.
Is there a name for this equation ands can you explain the pix part of the equation?
Its not “pix” its “pi * r² * h”. It’s a basic equation for the volume (V) of a cylinder.
It’s the volume of a cylinder, pi times height times radius squared
For a tapered section like that, you could estimate bottom and top layers and then average them. Then estimate height and multiply. You’d want to include an overlap factor as the roughly spherical nuts would settle in between each other somewhat. I’d imagine there’s some accepted value out there for that.
This is what I did. Roughly 5 wide at the bottom and 7 wide at the top or roughly 12 nuts per layer average. Then the stack appears to be about 12 nuts high so 144 total and maybe round up to 150 since it’s heaping at the top.
Edit: I didn’t initially see OP’s link to the site and I call complete bullshit on that ‘correct’ answer without seeing them poured out and counted on video. According to it, my answer is off by several hundred.
Not sure where you’d land at 12 nuts per layer on average. If you go off 5 nuts “wide” as your diameter you’d end up with at least 20 nuts at the bottom layer (area = π(5/2)² = 19.6).
I did 5 wide at the bottom and 7 wide at the top. 5x2 and 7x2 =24/2 (average) = 12 per layer. I now see how this isnt exactly correct as it’s a circle but the ‘proper’ answer puts it at 36 per layer which doesnt seem correct either.
Ah, but you’re calculating the area, so it would be length * width, not just multiplying by 2.
So you’re looking at 25 at the bottom and 49 at the top, making your average 37 per layer.
A = pi(r^2) is a hell of a drug.
Only when it jives with a sensible guesstimation.
Without outright spoiling the answer, according to the site, roughly every visible hazelnut in the image makes up just 16% of the total. If my guess of 12 layers is roughly accurate, every visible hazelnut only makes up two layers of the total which doesnt seem correct.
Considering this is a user submitted puzzle with zero verification (as far as I know), the simplest answer is that they gave a fake/incorrect number.
Volume of glass
Volume of hazelnuts (median)
Packing efficiency of spheres in a cylinder
Do some math
Be wrong by an order of magnitude because all the little hazelnuts are concealing one giant one
Vibes. I look at it and try to guess and submit a number within 5 or 10 seconds. It may not be as accurate but I feel like I get more benefit training my ability to estimate at a glance than I do training my ability to do math and spatial reasoning assisted by math. Im already really good at math and math assisted spatial reasoning
Imagej
In arbitrary units, I need in pixels estimations for:
Height of the vase H
Top diameter of the vase Dt
Bottom diameter of the vase Db
Mean diameter of a hazelnut Dh (measuring a few of them)
Packaging factor F… something arround .6? I’m sure there is a better way of estimating it. Like counting air and hazelnut areas on the image but I’m not sure how to correlate 2D to 3D in this case.
The volume of the vase is Vv (H,Dt,Db)
The volume of a single hazelnut Vh (Dh)
N = Vv F / Vh
Count the visible ones and multiply by pi. Not that accurate, considering the shape of the glass and the top of the nut stack, but it’s about as close as I can be arsed calculating now. I refuse to be nerd sniped today, so a ballpark figure will have to suffice.
Context:
I love it 😄
Did you extract those clips for this post, and do you have a recommended method for doing that? I sometimes find clips on getyarn, but the site barely loads half the time
Someone say a God Damn number. _
480
x
I would look at them and pull a number out of my ass.
All of them are in the cup.
No, I have some in a jar at my house, so it can’t be all of them.
I saw some at the store, but I need to go back and confirm that they are still there
I was 8 off, notbad
Used cylinder volume formula using hazelnuts as units
I don’t math so good, so I roughly counted layers and used the formula for area of a circle, reduced slightly for gaps. First guess was a good 10%-15% off but got within 12 on the second. Then I seriously overcorrected on my third.
Nice work. Cylinder volume is just area of circle multiplied by height, nothing too fancy. Imagine a circle being extruded by one dimension (height)
If you put them in the trash there’s 0
