. = √25 + 225 . = √250 . = √25.10 . = 5√10 5√10 = ( × (10 + 10 + 30 + 30)) + 10 × 30 2 5√10 = ( × 80) + 300 2 = (5√10 × 40) + 300 = 200√10 + 300 = (5√10 × 40) + 300 2 = 632,5 + 300 = 932,5 32 E-Modul Bangun Ruang Sisi Datar Kelas VIII SMP/MTs