问题 问答题

(A) 条件(1)充分,但条件(2)不充分.
(B) 条件(2)充分,但条件(1)不充分.
(C) 条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
(D) 条件(1)充分,条件(2)也充分.
(E) 条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.

[*]
What is the area of the figure above formed by a square and four semicircles
(1) The perimeter of the figure is 12π.
(2) The perimeter of the square is 24.

答案

参考答案:D

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