@Prof. We really need to get you started on shippinghere to the States. (Canada too, @Darko)Some REALLY interesting things on your web site.www.webbq.it
pie r squared = c. r being the radius.Usually, the ring fits inside or directly on top.
Quote from: robert-r on December 24, 2017, 08:39:23 AMpie r squared = c. r being the radius.Usually, the ring fits inside or directly on top.If memory serves, circumference is 2πR, or πD. (I believe πRsqrd. is the formula for area, not circumference.)-Jed