mathismyworld 01:45 13 Feb 2013 #1 
gereksizyorumcu 02:39 13 Feb 2013 #2
7.
pisagordan AD²+3²=5² → AD²=16
yine pisagordan AD²+8²=x² → 16+64=x² , x²=80 → x=4√5
pisagordan AD²+3²=5² → AD²=16
yine pisagordan AD²+8²=x² → 16+64=x² , x²=80 → x=4√5