试题与答案

(A) 条件(1)充分,但条件(2)不充分. (B) 条件(2)充分,但条件(1)

题型:问答题

题目:

(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.

[*]
Circle O is inscribed in parallelogram ABCD, whose base is 12 inches. Find the area of the shaded portion.
(1) The radius of the circle is 4 inches.
(2) DC is twice as long as AD.

答案:

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参考答案:C

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