[計量] 兩題數學
16. The area of town A which lies in city B is 20% of the area of
city B not in town A
Col A: Ratio of area of A to that of B
Col B: 18%
之前PO過類似的 這次Col B不一樣
之前板友有人算Col A=1/6
不過韓網答案給A
有人有不同的解題法嗎
Given two triangles, one triangle inserted in another as above.
The vertices of big triangle is ABC & smaller triangle i.e.
the inner triangle is PQR such that AB//PQ and AC//PR.
Given angle A is y degrees, angle R is z degrees & exterior angle of
A is x degrees.
Col A: x
Col B: y+z
韓網給C
我想不太透
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