[計量] 問題請教
一題計量問題請教版友
題目是來欣發的資料 Q2-3文字應用題的第11題
Right triangle PQR is to be constructed in the xy-plane so that the right
angle is at P and PR is parallel to the x-axis. The x- and y-coordinates of P
Q, and R are to be integers that satisfy the inequalities -4< = x < =16 and
6< = y < =16. How many different triangles with these properties could be
constructed?
< = 是小於等於的意思..不好意思
Ans: 9,900
看了幾遍都解不出來 懇請高手幫助
謝謝!!
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