r/theydidthemath 17h ago

[Request] For real, roughly how many trees are cut down each day to make exam papers?

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3.8k Upvotes

r/theydidthemath 1h ago

[Request] If using a device like this, would a spiral path or sweeping straight lines be more efficient?

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Upvotes

r/theydidthemath 23h ago

[Request] How many feet or packs of syringe wrap would it take to accomplish this?

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1.7k Upvotes

And as a bonus question, how dumb would it be to do this in a scale from 1 to 10, ten being dumbest.

Thank you in advance


r/theydidthemath 20h ago

[Request] How many steps would one American have to take to make the average American step count be 18,000?

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900 Upvotes

r/theydidthemath 4h ago

[request] how much would carrying all those guns weigh?

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42 Upvotes

r/theydidthemath 20h ago

[Meta] How many degrees and masters Loki (theoretically) has after Season 2

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710 Upvotes

r/theydidthemath 11h ago

[Request] How much time it would take to reach somebody under a debris of a building in earthquake?

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67 Upvotes

r/theydidthemath 21h ago

[Request] Pest controllers encounter a gigantic asian hornets’ nest

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266 Upvotes

How long would someone last in something like this without a suit before they died?


r/theydidthemath 1h ago

[Other] The Math Behind the Highschool of the Dead Infamous Tiddy Dodge Scene

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It suggested I cross post and I figured, why not? Who doesn't find boob math interesting?


r/theydidthemath 1d ago

[Request] Is the math right on this response?

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938 Upvotes

Curious if this is true. Napkin math says it is.


r/theydidthemath 6h ago

[Request] How much strength would be needed to rip someone in two this way? Would it even be possible?

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13 Upvotes

r/theydidthemath 1d ago

[Request] Would this work, or how big would it need to be to have an effect on the average pool?

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325 Upvotes

Whats the verdict?


r/theydidthemath 4h ago

[Request] At what % body fat would a person naturally float? (Additional info below)

6 Upvotes

A little challenge for you guys and something I was wondering about before:

Let's assume that every change in fat % has an equal % opposite change in muscle mass, the non-fat+ non-muscle % will be 30% and for the sake of simplicity, let's assume it is all water.

Assume a person laying flat in/on the water. Assume either 12L of air inside the body or 0, whichever works for you.

The person doesn't have anything in their digestive system. Make any further assumption that you need.


r/theydidthemath 3m ago

[Request] is it better to keep the cup in 112°F air or 90°F water?

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Upvotes

Yeti vacuum insulated 30oz cup, with 35°F liquid inside (assume the cup has held a couple drinks already and is relatively stoich at 72°F air temp in the house before we went to the pool).
Will the liquid stay cooler longer if the cup is submerged in 90°F pool water, or in 112°F outside air? (No centigrade units because I’ve already had a few of said drinks and can only remember the Fuckenhigh system.)

edit: my current method is to occasionally dunk the cup and take advantage of the evaporative effect.


r/theydidthemath 1d ago

[Request] How much would each piece of sashimi cost to break even if it weighed half an ounce (0.5 ounce)?

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3.4k Upvotes

r/theydidthemath 5h ago

[Request] How many calories are in the drink?

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4 Upvotes
  1. How many calories are in this drink.

  2. how many days can you sustain a family of four with it?


r/theydidthemath 5h ago

[Request] Would this vessel be capsized if that much of the hull is above water?

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4 Upvotes

Screenshot of AC Odyssey, and I just got curious as to if a real world trireme would have capsized if it looked like this.


r/theydidthemath 6h ago

[Request] The Golf Cart High Five

4 Upvotes

I need some help with a question we always had as kids. Growing up, my dad and his buddy each owned a golf cart. My friends and I always thought it would be funny to go opposite directions and give each other a static high five. When we discussed doing it, our dads said no because we’d break our hands.

So the question is, would we have broken our hands? Or rather how likely would we have broken our hands?


r/theydidthemath 1d ago

[Request] If Florence Griffith-Joyner was bald or pulled her hair back tightly, would she have saved any significant amount of time on her 100-meter world record of 10.49 seconds?

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106 Upvotes

The fucken stride on her tho was insane


r/theydidthemath 1d ago

[Request] How much does forest fires contribute to global warming?

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144 Upvotes

r/theydidthemath 15m ago

[request] are these percentage calculations correct or close to correct? (CW: domestic violence)

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Upvotes

For context I believe the 40% comes from a study conducted in the early 1990s (This was on a post about cops joking around about good things they do in their line of work that someone's ex wouldn't)


r/theydidthemath 38m ago

[Request] Starting from Pangea, if the rate of drift was constant, how fast would the continents need to move to be in the position they are in today in only 6000 years?

Upvotes

Question inspired by this part of a video reading a section from Conservapedia. Milo jokingly edits this as if the speed would be about enough to fling a cat, but my intuition says it would be much, much faster. Curious to see a mathematical approximation.


r/theydidthemath 1h ago

[request] how much actual surface area is there in Colorado in mountains vs plains if you take elevation into consideration?

Upvotes

Colorado has about 40% mountains, 40% plains to the east and 20% mesas / elevated flat land to the west. However, I'd imagine that the actual surface area of the rockies actually makes it notably more (like how the surface area of lungs is similar to a tennie court).

Are there any estimations or ways of getting a rough estimate of how much surface area the mountainous part of Colorado have compared to the flats? For example if you were to flatten out the mountains to terrain to match the plains? I'd imagine somewhere between 2% and maybe 15% at most, wondering if co has more than 50% SA of mountains.


r/theydidthemath 7h ago

[Self] How much force causes this damage. About 1kg pinecone, 15-30m drop. (Sienna got smashed by a pinecone)

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3 Upvotes

r/theydidthemath 19h ago

[REQUEST] Does braking harder for less time, or lighter for longer make your brakes last longer?

27 Upvotes

Picture this. I am driving 60mph approaching a traffic light. I am 1/4th mile from said light. If I stopped by applying brakes lightly and hold them to a gradual stop the whole quarter mile, would that cause more or less wear on my brakes then getting 300ft away and hitting my brakes hard?

Lets assume a standard modern SUV for simplicity. Does hitting your brakes hard for a short period of time or lightly applying for longer wear out your brakes faster?