Comment on The more you know
reattach@lemmy.world 5 months agoSorry, the surface area of the “vertical” side of the crust, not including the top or bottom surfaces.
Comment on The more you know
reattach@lemmy.world 5 months agoSorry, the surface area of the “vertical” side of the crust, not including the top or bottom surfaces.
victorz@lemmy.world 5 months ago
Still not right, I think. That would be 2πZ, not 2πZa, right?
reattach@lemmy.world 5 months ago
No, you need to include the height of the cylinder (a). Imagine a deep dish pizza (big a) versus a thin crust (small a) - the sides of the deep dish pizza have more area. Your formula returns the circumference of the pizza.
If you’re interested in dimensional analysis (and why wouldn’t you be?) the formula you proposed doesn’t have enough length units. It would return a value of length (like inches, or cm) not area (like square inches or square cm).
victorz@lemmy.world 5 months ago
Oh gosh, my mistake. Had just woken up.