圆锥的母线长为6cm，底面周长为5πcm，则圆锥的侧面积为______．
S侧=12•2πr•l=5π×6=15πcm2．
故答案为：15πcm2．
It took _____ building supplies to construct these energy-saving houses. It took brains, too. [ ]
A. other than
B. more than
C. rather than
D. less than
治疗右下肢和躯干感觉发凉，应选择的头穴线是（）
A.右侧顶颞后斜线上1/5
B.右侧顶颞后斜线中2/5
C.右侧顶颞后斜线下2/5
D.左侧顶颞后斜线上1/5
E.左侧顶颞后斜线中2/5
