The bigger square in the figure is made up of 4 indentical rectangles and a smaller square. The areas of the bigger and smaller squares are 49cm2 and 4cm2 .
Find the width of one rectangle.
maths!!
2007-08-16 3:29 am
回答 (1)
2007-08-16 6:22 am
✔ 最佳答案
http://i24.photobucket.com/albums/c50/kamingchun/Unknown.jpgOR
http://www.geocities.jp/kamingchun1/Unknown.JPG
You can see my photo.
Area of the bigger square ACEG = 49cm2
so AG = 7cm
Area of the smaller square IJKL = 4cm2
so IJ = IL = 2cm
AHLB, BIDC, DJFE and KFGH are the identical rectangles.
so BI = KF
Let BI = x cm
BI + IL + KF = 7 cm
x + 2 + x = 7
2x = 5
x = 2.5
so the width of one rectangle = BI = 2.5 cm
參考: me
收錄日期: 2021-04-23 17:20:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070815000051KK04926