temen2 tolongin aku dong, yg no 22 dan 23

22)L1=D1×D2
-----------
2
=14×28
--------
2
=392=196 cm2
--------
2
L2=a×t
=50×7
=350 cm2
196 cm2
-------------- +
546 cm2


23)L1=a×t
------
2
=78×28
----------
2
=2.184=1.092 m2
----------
2
L2=p×l
=52×16
=832 m2
1.092 m2
--------------- +
1.924 m2