已知一个三角形的面积是36.6cm2,和它等底等高的平行四边形的面积是______cm2.
36.6×2=73.2(平方厘米);
答:平行四边形的面积是73.2平方厘米.
Mr. Full apologized ______ the children ______ what he had done.
A.for; to
B.to; for
C.for; for
D.to; with
爆炸的破坏形式有()三种。