tolong dong isi no 25,26 pake caranya y

22/7 × 14 × 14 = 22 × 14 ×2 = 616 cm2
12 × 12 = 144 cm2
616 - 144 = 472 cm2

20 × 14 = 280
1/2 × 22/7 × 7 × 7 = 11 × 7 = 77
14 × 10 × 1/2 = 70
280 + 70 + 77 = 427 cm2