英语翻译a rectangular portrait measures 50cm by 70cm.it is surrounded by a rectangular frame of uniform width.if the area of the frame is the same as the area of the portrait ,what is the approximate width of the frame 不要把文字放在百度
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英语翻译a rectangular portrait measures 50cm by 70cm.it is surrounded by a rectangular frame of uniform width.if the area of the frame is the same as the area of the portrait ,what is the approximate width of the frame 不要把文字放在百度
英语翻译
a rectangular portrait measures 50cm by 70cm.it is surrounded by a rectangular frame of uniform width.if the area of the frame is the same as the area of the portrait ,what is the approximate width of the frame
不要把文字放在百度或者谷歌翻译里,否则不予采纳
英语翻译a rectangular portrait measures 50cm by 70cm.it is surrounded by a rectangular frame of uniform width.if the area of the frame is the same as the area of the portrait ,what is the approximate width of the frame 不要把文字放在百度
一副矩形肖像,边长分别是50cm和70cm,装在一个四边等宽的矩形相框内.假如相框的面积跟肖像的面积相等,那么相框大概宽度是多少?
将一幅尺寸为50cm×70cm的画装在画框里。假设画框的宽度处处相等,且画框面积与画的面积相等,求画框宽度。
这是个基本的二元一次方程题目。假设画框宽度为x cm,于是
4x² + 2·50x + 2·70x = 50×70
解得x = 1.4245 cm