7. Let be the length of a diagonal of a square, and be the length of two diagonals of a rhombus respectively. If ,then the ratio of area of the square and rhombus is 查看更多

 

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Let a be the length of a diagonal of a square, b and c be the length of two diagonals of a rhombus respectively. If b:a=a:c,then the ratio of area of the square and rhombus is (  )

(A)1:1.   (B)2:.  (C)1:. (D)1:2.

(英汉词典:length长度;diagonal对角线;square正方形;rhombus菱形;respectively分别地;ratio比;area面积)

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Let a be the length of a diagonal of a square,b and c be the length of two diagonals of a rhombus respectively.If b:a=a:c,then the ratio of area of the square and rhombus is(  )
(英汉词典:length长度;diagonal对角线;square正方形;rhombus菱形;respectively分别地;ratio比;area面积)
A、1:1
B、2:
3
C、1:
2
D、1:2

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Let a be the length of a diagonal of a square,b and c be the length of two diagonals of a rhombus respectively.If b:a=a:c,then the ratio of area of the square and rhombus is(  )
(英汉词典:length长度;diagonal对角线;square正方形;rhombus菱形;respectively分别地;ratio比;area面积)
A.1:1B.2:
3
C.1:
2
D.1:2

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