8. The figure shows a right-angled triangle ABC with AB = 6 cm and AC = 10 cm. D is a point on BC such that DC = 2 cm.
a) Find the lenght of BC.
b) Find the area of [符號是三角形的?]ABD.
p:
http://www.flickr.com/photos/29635862@N06/342529025/
Pythagoras' Theorem
2009-04-10 3:15 am
回答 (2)
2009-04-10 4:31 am
✔ 最佳答案
圖片參考：http://farm4.static.flickr.com/3306/3425629025_91d2885f69.jpg?v=0
BC2=AC2-AB2(pyth. theorem)
=102-62
=64
BC=8cm
BD=BC-DC
=8-2
=6cm
The area of ΔABD=1/2 (BD) (AB)
=1/2 (6) (6)
=18cm2
2009-04-10 4:12 am
a) Find the lenght of BC.
b) Find the area of [符號是三角形的?]ABD.
Ans:
a) 8 cm
b) 18 cm^2
b) Find the area of [符號是三角形的?]ABD.
Ans:
a) 8 cm
b) 18 cm^2
收錄日期: 2021-04-23 20:48:39
原文連結 [永久失效]:
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