Maths"20FUN RATIO(2)
1) In the figure, ABCD is a rectangle, and E is a point on AD. Find the ratio of area of triangle BCE: area of ABCD.
MATHS""20FUN
2007-11-05 1:40 am
回答 (2)
2007-11-05 1:48 am
✔ 最佳答案
the ratio of area of triangle BCE: area of ABCD. BCE:ABCD =1:2
你可以設ab為y啦..ad為z..咁bc係z...dc係y
abcd個aera:=yz
bce個aera=zy/2
so BCE/ABCD =(zy/2)/yz
BCE:ABCD =1:2
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