1)
What are the connotations of "Re'ach Nicho'ach"?
1.
Rashi: It implies that Hashem derives Nachas (satisfaction) from the fact that His will was carried out.
2.
Targum Onkelos and Targum Yonasan: It implies that Hashem will accept the Korban with good will.
2)
What is the definiion of "Isheh"?