ERIES.SiK,—I think it was I who first inquired about finding thecentre of a circle by having a portion of the circumference.I saw it answered in a different way from what I wishedin No. 45 of your work. I have, however, recalled themode of finding it which I sought, I have always found itcorrect,… … i chord 2height -^ height = diameter. 65, which divided or halved by 2, gives 32j, the centre re-quired of the circle. Or, in the shape of an arithmeticilrule:—Multiply half the chord by half the chord, anddivide the product by the height; then add the height,which gives the diameter, which halved,…
Design · Decoration and ornament · Art
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
