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eelyw::how do u get 3,4 and 5?
Arithmetic sequence question
2008-10-12 5:17 am
If the perimeter of the right-angled triangle (x is the opposite side, y is the adjacent side and z is the hypotenuse) is 42cm, and the values of x,y and z form an arithmetic sequence, find the lengths of the sides of the triangle.
回答 (1)
2008-10-12 6:08 am
✔ 最佳答案
Triangle with sides 3, 4 and 5 will be a right-angled triangle. Perimeter is 12.Now perimeter is 42, that is increased by 3.5 times. Therefore, the 3 sides are
3 x 3.5 = 10.5
4 x 3.5 = 14 and
5 x 3.5 = 17.5 = hypotenuse. And form a A.S.
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https://hk.answers.yahoo.com/question/index?qid=20081011000051KK02419