Tolong nomor 45 ya makasih :)

Dik: h = 6cm
s = 12cm
R = 12cm
Dit: s'

jb:
= 2/R = 1/s + 1/s'
= 2/12= 1/12 + 1/s'
= 1/s' = 2/12 - 1/12
= 1/s' = 1/12
= s' = 12cm
JAWABANNYA C. 12cm, di depan cermin

f= 1/2 r
so= 12
r= 12
si= ?
-1/f - 1/so = 1/si
-1/6 - 1/12 = 1/si
-2-1/12 = -4/si= diperkecil karena minus
si= 4
m= ?
m= si/so
m=1/3 karena 4/12= 1/3= di perkecil karena m=1/3
sifatnya = maya, tegak, diperkecil di belakang cermin