一个圆柱的底面直径是10米,高等于底面周长的一半,这个圆柱的表面积是（）平方米?_数学解答

一个圆柱的底面直径是10米,高等于底面周长的一半,这个圆柱的表面积是（）平方米?

人气：415 ℃　时间：2020-04-12 22:50:21

解答

10÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4x10=314314+157=47110÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.9810÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.9810÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.9810÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.9810÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.9810÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.9810÷2=55x5x3.14=78.5 78.5x2=15710×3.14=31.4 31.4÷2=15.731.4×15.7=492.98 492.98+157=649.98单位，我不知道意思