直径2.5米,半径=2.5/2=1.25米,高60米?
圆柱的表面积
=侧面积+2底面积
=3.14*直径*高+2*3.14*底面半径^2
=3.14*2.5*60+2*3.14*1.25*1.25
=471+9.8125
=480.8125(平方米)