Jawabanmu

2014-08-27T17:47:57+07:00
330m = 33000cm : 15 = 2200
2200 x 12 = 26400cm = 264m lebar gedung sebenarnya
2014-08-27T17:50:51+07:00
Lebar gedung = x
15/33000 = 12/x
15x = 33000.12
15x = 396000
x = 26400 cm = 264 m