The crossings of the edges of the blue region happen exactly at the crossing points in the grid.
Previous iteration: #702560
159 sats \ 21 replies \ @Undisciplined 28 Sep
72 cm2
The arcs are circles of the same radius offset by 6cm. That makes the white area in one square congruent to a white area in the adjacent square. Two full worth of blue are shaded.
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40 sats \ 3 replies \ @Bell_curve 29 Sep
18x12 - 12x12 is 12(18-12) is 12x6 or 72
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21 sats \ 2 replies \ @Undisciplined 29 Sep
True, but what led you down that path.
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34 sats \ 1 reply \ @Bell_curve 29 Sep
Your hint about the congruent circle ⭕️
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21 sats \ 0 replies \ @Undisciplined 29 Sep
Interesting
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58 sats \ 13 replies \ @cryotosensei 29 Sep
Actually this is a routine question asked of 12-year-olds in our Primary School Leaving Examination. They are trained to employ such heuristic thinking
Cc: @Satosora
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45 sats \ 11 replies \ @Undisciplined 29 Sep
American 12th graders would be almost universally stumped by this question.
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57 sats \ 0 replies \ @SimpleStacker 29 Sep
Sad, but true
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22 sats \ 9 replies \ @cryotosensei 29 Sep
Well they aren’t trained to do it, that’s why
I should post some tough PSLE questions here. Every other year, a question gets featured in our national media because kids come out of the exam room crying, parents cry foul, and education personnel tell everyone to chillax. It’s all very dramatic haha
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45 sats \ 7 replies \ @south_korea_ln OP 29 Sep
Curious about that PSLE questions.
Happened here too for 수능, university entrance exam. Some questions end up being too difficult. And because one's whole future sounds depends on a single exam, this can lead to big emotions...
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24 sats \ 5 replies \ @Bell_curve 29 Sep
While future in one exam
Sounds extreme
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21 sats \ 3 replies \ @cryotosensei 29 Sep
The major Korean companies only hire from graduates from the top 4 colleges, if I’m not mistaken. Quite an immobile society in that sense
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96 sats \ 1 reply \ @south_korea_ln OP 29 Sep
That's a bit of a caricature, but it used to be pretty much like that. Slowly changing though. One of my recent students, not from any of those 4 unis, got hired without a problem by Samsung.
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0 sats \ 0 replies \ @Bell_curve 29 Sep
What do you do if you don’t attend a top 4 school?
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0 sats \ 0 replies \ @Bell_curve 29 Sep
Whole not while , dam autocorrect
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0 sats \ 0 replies \ @cryotosensei 29 Sep
Sure, I will post one!
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21 sats \ 0 replies \ @Undisciplined 29 Sep
No, they are trained to do it. Our government education is just a complete disaster.
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0 sats \ 0 replies \ @Satosora 29 Sep
Maybe that is where I saw it.
It took me a minute to figure it out.
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31 sats \ 2 replies \ @Satosora 28 Sep
you were very fast.
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20 sats \ 1 reply \ @Undisciplined 28 Sep
I happened to see the post pretty shortly after it went up.
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56 sats \ 0 replies \ @Satosora 28 Sep
Me too.
I think I have seen this puzzle somewhere, maybe a math olympiad?
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155 sats \ 5 replies \ @Satosora 28 Sep
6x6x2=72
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20 sats \ 4 replies \ @cryotosensei 29 Sep
Good effort! Haha
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24 sats \ 3 replies \ @Satosora 29 Sep
what do you mean?
look a the timestamps.
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21 sats \ 2 replies \ @cryotosensei 29 Sep
Well you still solved it, right.
Ngl I had to rely on @Undisciplined’s explanation before I figured it out haha
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48 sats \ 1 reply \ @Satosora 29 Sep
I solved it first.
Not still.
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0 sats \ 0 replies \ @cryotosensei 29 Sep
Sorry, my bad.
Sats for you!
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