Question

tolong bantu jawab ya​

Answer 1

بِسْـــــــمِ اللّٰهِ الرَّحْمٰنِ الرَّحِيْمِ

Diketahui:

• a∆ = BC = 6 cm
• t∆ = AC = 8 cm
• m∆ = 10 cm (tripel Phytagoras)
• tp = BE = 12 cm

Ditanyakan:

• Lp = .... cm²?
• V = .... cm³?
• Ls = .... cm²?

Penyelesaian:

• Luas permukaan prisma

Lp = (2 × La) + (Ka × tp)

= (2 × ½ × a∆ × t∆) + ((a∆ + t∆ + m∆) × tp)

= (2 × ½ × 6 × 8) + ((6 + 8 + 10) × 12)

= (6 × 8) + (24 × 12)

= 48 + 288

= 336 cm²

• Volume prisma

V = La × tp

= ½ × a∆ × t∆ × tp

= ½ × 6 × 8 × 10

= ½ × 480

= 240 cm³

• Luas permukaan selimut prisma

Ls = Ka × tp

= (a∆ + t∆ + m∆) × tp

= (6 + 8 + 10) × 12

= 24 × 12

= 288 cm²

وَاللّٰهُ اَعْلَمُ بِاالصَّوَافَ