Qrad equation for circular microstrip Antanna

Hi all
Kindly, I need your support for calcaulate Qrad, you can find all eq. for the Qrad , I ask which eq. correct nad I can use for another calculate ?
Thanx

no any body need answer me pleeeeeeeeeeeeeeeeeeeeeese I need your supoooooooooooooooooooooooooooort
pleeeeeeeeeeeeeeeeeeeeeeeeeeeese
Thanx