Tolong dijawab y Jangan ngasal :))

44. 1025. 10. 200
= 2050000

45. A. 1/f = 1/s + 1/s'
1/15 = 1/20 + 1/s'
1/s' = 1/15 - 1/20
1/s' = 1/60
s' = 60 cm


B. h'/h = s'/s
h'/3 = 60/20
h' = 9 cm