底面积2乘以2乘以3.14=12.56
侧面积2乘以2乘以3.14乘以4=50.24
表面积2乘以2乘以3.14乘以2+2乘以2乘以3.14乘以4=75.36
体积2乘以2乘以3.14乘以4=50.24