Primary Mathematics People's Education Edition, Grade Six, Volume I: "Determining the Starting Line", 76 pages of example answers.
Diameter: 72.675.177.680.182.685.187.690.1
Circumference: 228.07 235.93 243.79 251.64 259.50 267.35 275.20 283.06
Full-length: 399.99 407.85 465 438+05.71.423.56 438+0.42 5465436