英语翻译这句话啥意思?还有就是这道题咋做?要确切翻译!If a circle’s area is to be doubled,by what factor must its radius be multiplied?

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英语翻译这句话啥意思?还有就是这道题咋做?要确切翻译!If a circle’s area is to be doubled,by what factor must its radius be multiplied?

英语翻译这句话啥意思?还有就是这道题咋做?要确切翻译!If a circle’s area is to be doubled,by what factor must its radius be multiplied?
英语翻译
这句话啥意思?还有就是这道题咋做?要确切翻译!
If a circle’s area is to be doubled,by what factor must its radius be multiplied?

英语翻译这句话啥意思?还有就是这道题咋做?要确切翻译!If a circle’s area is to be doubled,by what factor must its radius be multiplied?
如果一个圆的面积增加一倍,半径增加多少?
S=R的平方,所以R要增加到根号2倍,大概增加0.414倍

如果圆的面积要加倍, 半径需要乘以多少

如果要将一个圆的面积扩大一倍,它的半径必须要乘多少?

如果一个圆的面积将增加一倍,那么它的半径要乘以多少呢?

If a circle’s area is to be doubled, by what factor must its radius be multiplied?
如果一个圆的面积扩大一倍,由什么因素来使其半径增多?