GMAT 考满分题库

- 数学PS -
The radius of $$O_1$$ is R. The radius of $$O_2$$ is r. These two circles are tangent to each other and they are tangent to the quadrilateral ABCD. BD =?

  • A2(R+r)
  • B$$2\sqrt{2}$$(R+r)
  • C(1+$$\sqrt{2}$$)(R+r)
  • D(1+$$\sqrt{3}$$)(R+r)
  • E(2+$$\sqrt{2}$$)(R+r)
显示答案
正确答案: C

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