maths ce 94

👨🏻‍🏫 學術台數學

2011-07-25 1:02 am

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maths ce 94

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回答 (1)

2011-07-25 1:21 am

✔ 最佳答案

11 Let the height of ABC is x, the length of BC is a

ax/2 = 2a^2

x = 4a

PQ/BC = (x - a)/x

PQ/BC = 3/4 (D)

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