[spec] add section on circle mensuration

diff --git a/spec/spec-collated.pdf b/spec/spec-collated.pdf
index 705bf5d3a644d3e2067a96414ca760834bd1e307..174123300d682eed2ce36cbdcf45de357ef04085 100644 (file)
Binary files a/spec/spec-collated.pdf and b/spec/spec-collated.pdf differ