初二数学题，朋友们快回答呀！

来源：百度知道 编辑：UC知道 时间：2024/06/21 10:36:09
在面积为12.56平方厘米的圆内画一个正方形，求正方形边长x（厘米）的取值范围。（π取3.14）

πR^2=12.56,得R=2
由此可得：
0＜2X^2≤2R
解得：0＜X≤根号2

12.56/3.14=4
根号4=2
2*2=4
正方形边长x的取值范围是0大于x大于4

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12.56/3.14=4
根号4=2
2*2=4
正方形边长x的取值范围是0大于x大于4

0<X<2倍根号2

根号2