底面积 = πR^2 = 3.14m^2
侧面积 = 表面积 - 2底面积 = 37.68 - 6.28 = 31.4m^2
底面周长 = 2πR = 6.28m
高 = 侧面积÷底面周长 = 31.4÷6.28=5m
设高为h,2πr·h+2πr²=37.68,r=1,算出来h=5m