[spec] add section on circle mensuration

diff --git a/spec/spec-collated.pdf b/spec/spec-collated.pdf
index 6e6dc208768da9be5b522be916a5644b69d5ccf9..174123300d682eed2ce36cbdcf45de357ef04085 100644 (file)
Binary files a/spec/spec-collated.pdf and b/spec/spec-collated.pdf differ