In Figure-2, . If
and
then EC is equal to
Option: 1 2.0 cm
Option: 2 1.8cm
Option: 3 4.0 cm
Option: 4 2.7 cm
?????? ???????????? ????? ????, ?? ???? ????? ????.??? ???????? 16 ??? ?????.?????? 1?? 12 ???.?????? ?????.????? ?????? ???????? ??? ???????? ?????????? ???????????? ??? ??? ????.?????? 5 ?????? ??? 5???? ??? .......8 ?????? ??? 8???? ??? ......???? ????