已知椭圆与椭圆有相同的长轴,椭圆的短轴长与椭圆的短轴长相等,则(

已知椭圆与椭圆有相同的长轴,椭圆的短轴长与椭圆的短轴长相等,则(　　)

A.a²=25,b²=16

B.a²=9,b²=25

C.a²=25,b²=9或a²=9,b²=25

D.a²=25,b²=9

答案

解析

:∵椭圆的长轴长为10,焦点在x轴上,椭圆的短轴长为6,

∴a²=25,b²=9.

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