∏r+r=8.28,
问题描述:
∏r+r=8.28,
答
∏r+1×r=8.28
r×(∏+1)=8.28
8.28÷4.14=2
∏r+r=8.28,
∏r+1×r=8.28
r×(∏+1)=8.28
8.28÷4.14=2