2.27. A certain radar has losses of 5dB and a receiver noise figure of 10dB. This radar has a detection coverage requirement that extends over 3/4 of a hemisphere and must complete it in 3 seconds. The base line target RCS is 6dBsm and the minimum SNR is 15dB. The radar detec- tion range is less than 80Km. What is the average power aperture product for this radar so that it can satisfy its mission?