1,圆O的内接正方形边长=√2R,圆O的外切正方形的边长=2R
AB;AB'=√2R:2R=√2:2
面积比=AB^2;AB'^2=2R:4R=1:2
2,圆O的内接正六边形边长=R,圆O的外切正六边形的边长=2√3/3R
AB;AB'=1R:2√3/3R=1:2√3/3
面积比=6*√3/4AB^2:6*√3/4AB'^2=3:4
1,圆O的内接正方形边长=√2R,圆O的外切正方形的边长=2R
AB;AB'=√2R:2R=√2:2
面积比=AB^2;AB'^2=2R:4R=1:2
2,圆O的内接正六边形边长=R,圆O的外切正六边形的边长=2√3/3R
AB;AB'=1R:2√3/3R=1:2√3/3
面积比=6*√3/4AB^2:6*√3/4AB'^2=3:4