原式=3.14×(-35.2)+3.14×2×(-23.3)+3.14×(-0.5)×36.4 =3.14×(-35.2-46.6-18.2) =3.14×(-100)=-314
(3.14)*(-35.2)+6.28*(-23.3)-1.57*36.4 =3.14*(-35.2-46.6-18.2) =3.14*100 =314