[計量] 想請教一題計量
剛剛在印網看到的
In a circle two arcs are drawn from center such that
the lower and upper part of the arc lengths are in the
ratio 4:9, then what is the angle subtended at the center
by the lower part of the circle?
連題目都看的不是很懂= =
麻煩請板上大大代為解答一下
謝謝了
還有一題
In circle, a triangle is formed with its base as the diameter
of the circle and radius of the circle is 4 units.
Col A: The area of the triangle
Col B: 12
假如是在圓內且底部為直徑的三角形
不就只有等腰直角三角形嗎?
我看一下討論眾說紛紜,我個人是認為A = 16
不知道版友認為是什麼呢?
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09/20 22:56, , 1F
09/20 22:56, 1F
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