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Surface area
| July 16th, 2015 at 1:01:40 PM permalink | |
| Nareed Member since: Oct 24, 2012 Threads: 346 Posts: 12545 | What's the inner surface area of a cylinder 500 meters long and 50 meters wide, without taking the ends into account? Thanks Donald Trump is a one-term LOSER |
| July 16th, 2015 at 2:23:00 PM permalink | |
| Dalex64 Member since: Mar 8, 2014 Threads: 3 Posts: 3687 | That would be the length of one dimension times the length of the other. One dimension is 500m The other dimension is the circumference, 50m times PI So the surface area is 500 * 50 * PI That's about 78,500 square meters. Assuming an inside diameter of 50m "Everyone is entitled to his own opinion, but not to his own facts." Daniel Patrick Moynihan |
| July 16th, 2015 at 3:24:49 PM permalink | |
| Nareed Member since: Oct 24, 2012 Threads: 346 Posts: 12545 |
Thanks! that easy? I'm stunned. I expected something a bit more complex.
Oh, yes. the exterior is thicker, but it doesn't contribute to the inner surface. Thanks again. Donald Trump is a one-term LOSER |
| July 16th, 2015 at 4:34:41 PM permalink | |
| TheCesspit Member since: Oct 24, 2012 Threads: 23 Posts: 1929 |
It's justa rolled up rectangle, so the only hard part is working out the width of the rectangle. It is said that your life flashes before your eyes just before you die.... it's called Life |