[spec] add section on circle mensuration

diff --git a/spec/spec-collated.pdf b/spec/spec-collated.pdf
index 881e8cce35bb330f82ec6766966659220694407e..174123300d682eed2ce36cbdcf45de357ef04085 100644 (file)
Binary files a/spec/spec-collated.pdf and b/spec/spec-collated.pdf differ