2r+3.14r/2=8+3.14r/2

问题描述:

2r+3.14r/2=8+3.14r/2

您好
下面是具体答案。
2r+3.14r/2=8+3.14r/2
2r=8
r=4

r=4

2r+3.14r/2=8+3.14r/2
2r=8
r=4