.nanti bintang 5……….​

Jawaban:

K. Kubus = 12 × 25 = 300cm

K. Balok = 4(p+l+t)

= 4(30 + 25 + 25)

= 4 × 80

= 320cm

K. Limas = (4×25) + (4×20)

= 100 + 80

= 180cm

K. prisma = (6×20) + (3×25)

= 120 + 75

= 195cm

Total Keliling seluruhnya

= 300 + 320 + 180 + 195

= 995cm

Sisa Kawat

= 10m – 995cm

= 1000 – 995

= 5cm (A)