Tolong jawab ya. Kalau bisa kasih penjelasanny :)

12. s=24cm MO=36➡f=18 s'=....
1/f=1/s+1/s'
1/18=1/24+1/s'
1/18-1/24=1/s'
4/72-3/72=1/s'
1/72=1/s'
s'=72(D)

13. M=|s'/s|=|72/24|=3cm(C)
14. M=|h'/h| 3=|h'/5| h'=5×3=15cm (B)
smoga membantu :)