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Опубликовано: 11-05-2022 12:17:48
Thanks to Aditya for the suggestion! A version of this problem given to students in class 10 in India (ages 14 - 17). Thanks to Tony for alerting me of an error in my original video! This one was so tricky that I missed it on my first try :)
Quora
https://www.quora.com/If-three-tangent-circles-of-equal-radius-are-inscribed-in-a-circle-of-radius-3-what-are-their-radii-What-is-r-in-the-picture-and-how-do-you-calculate-it
Sarthaks
https://www.sarthaks.com/252368/in-the-given-figure-three-circles-of-radius-2-cm-touch-one-another-externally
Toppr
https://www.toppr.com/ask/en-us/question/in-the-figure-three-circles-of-radius-2-cm-touch/
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