Yes good observation! This is the only portion of the torus' geometric proof that varies from the circle. We may attribute this change to the object being in 3 dimensions rather than 2. The more intuitive explanation is that we can imagine the cylinder being bent around such that its two opposite faces are joined together, it then becomes clearer why we assign the full length.
That's so cool. U made me wanna study math
That's great!
So few subscribers, I'm subbing now!
2:31 in circle we took length of rectangle as half the circumference, but in torus why is it the full length?
Yes good observation! This is the only portion of the torus' geometric proof that varies from the circle. We may attribute this change to the object being in 3 dimensions rather than 2. The more intuitive explanation is that we can imagine the cylinder being bent around such that its two opposite faces are joined together, it then becomes clearer why we assign the full length.
@@ReMathematics oh yeah, I get it now
thnx