Question

pls bantu kakak pls bantu kakak​

Answer 1

Verified answer

Penjelasan dengan langkah-langkah:

BANGUN RUANG

Prisma segi sembarang Atau Balok - selimut tabung

Tinggi = 2m → 200 cm

jari jari = 5 cm

a) Luas permukaan

= (2 × la ) + ( 4 × 20 × t ) + ( Ls.tabung)

= (2 × ((30×30)-(3,14×5×5))+( 4 × 20 × 200 ) + (2πrt)

= (2 × (900-78,5) + (16000) + (2 × 3,14 × 5 × 200)

= (2 × (821,5)) + ( 16000 ) + 6280

= 1643 + 16000 + ( 6280)

= 23923 cm²

b) Volume

= Volume balok - Volume tabung

= ( p × l × t) - (πr²t)

= ( 30 × 30 × 200 ) - ( 3,14 × 25 × 200)

= 180000 - 15700

= 164300 cm³