一个平行四边形与一个三角形的面积相等,底也相等,平行四边形的高是6厘米,三角形的高是______.
6×2=12(厘米),
答:三角形的高是12厘米.
故答案为:12厘米.
—He isn't an excellent astronaut, is he?
—______ [ ]
A. Yes, he isn't
B. No, he is
C. Yes, he is
D. No, he hasn't