一个圆柱的底面半径是3cm,高是2cm,这个圆柱的底面周长是( )cm,底面积是( ) cm2,侧面积是( ) cm2。
18.84;28.26;37.68
The earthquake which happened in Yushu________ 14th April 2010 was a big disaster.
A.at
B.on
C.in
D.to