CREATE TABLE table_45394 ("Rank" TEXT, "Name" TEXT, "Height  ( m ) " FLOAT, "Height  ( ft ) " FLOAT, "Floors" TEXT)

What is the Height of the Canterbury House with 12 Floors and a Rank of 75=?
SELECT AVG("Height (ft)") FROM table_45394 WHERE "Floors" = '12' AND "Rank" = '75=' AND "Name" = 'canterbury house'
SELECT AVG("Height (ft)") FROM "table_45394" WHERE "Floors" = '12' AND "Name" = 'canterbury house' AND "Rank" = '75='