3×3乘以3.14乘以20×3除以314

40×40乘以3.14乘以3除以20×20等于几...40×40乘以3.14乘以3除以20×20等于几

7×7乘以3.14除以4...7×7乘以3.14除以4

18×36乘3.14除以3除以144...18×36乘3.14除以3除以144

18×36乘3.14除以3除以140...18×36乘3.14除以3除以140

12×2乘以3.14除以4+10×2等于几...12×2乘以3.14除以4+10×2等于几

5×5乘3.144乘3除以3×3乘3.14等于几...5×5乘3.144乘3除以3×3乘3.14等于几

5×5乘以3.14乘以...5×5乘以3.14乘以

6×6乘3.14除以3等于几...6×6乘3.14除以3等于几

10×10乘以3.14乘以...10×10乘以3.14乘以

2×2乘以3.14乘以...2×2乘以3.14乘以