3.14xX²+3.14x(X÷2)²=100

问题描述:

3.14xX²+3.14x(X÷2)²=100

3.14xX²+3.14x(X÷2)²=100
3.14×5/4x²=100
x²=80/3.14
x=±5.0475

3.14xX²+3.14x(X÷2)²=100这道题,想求的不是x=多少,而是想求大圆面积或者小圆面积是多少吧?3.14xX²+3.14x(X÷2)²=1003.14xX²+3.14xX²÷4=100(1+1/4)3.14xX²=1003.14xX...