Jawaban:

1300 cm²

Penjelasan dengan langkah-langkah:

Diketahui = p = 4

l = 3

t = 2

luas alas baloknya = 300 cm

jawab

luas alas = p×l

300 cm = 4x × 3x

300 cm = 12x²

x² = 300 cm/12

x² = 25 cm²

x = √25 cm²

x = 5 cm

hitung panjang, lebar, tingginya

p= 4×

= 4 × 5 cm

= 20 cm

l = 3x

= 3 × 5 cm

= 15 cm

t = 2x

= 2 × 5 cm

= 10 cm

rumus luas permukaannya :

rumus luas permukaannya :Lp. balok = 2× {(p×l ) + ( p × t ) + ( l × t )}

rumus luas permukaannya :Lp. balok = 2× {(p×l ) + ( p × t ) + ( l × t )}= 2× {( 20 cm × 15 cm ) + ( 20 cm × 10 cm ) + ( 15 cm × 10 cm )}

rumus luas permukaannya :Lp. balok = 2× {(p×l ) + ( p × t ) + ( l × t )}= 2× {( 20 cm × 15 cm ) + ( 20 cm × 10 cm ) + ( 15 cm × 10 cm )}= 2× ( 300cm² + 200 cm² + 150 cm² )

rumus luas permukaannya :Lp. balok = 2× {(p×l ) + ( p × t ) + ( l × t )}= 2× {( 20 cm × 15 cm ) + ( 20 cm × 10 cm ) + ( 15 cm × 10 cm )}= 2× ( 300cm² + 200 cm² + 150 cm² )= 2× 650 cm²

rumus luas permukaannya :Lp. balok = 2× {(p×l ) + ( p × t ) + ( l × t )}= 2× {( 20 cm × 15 cm ) + ( 20 cm × 10 cm ) + ( 15 cm × 10 cm )}= 2× ( 300cm² + 200 cm² + 150 cm² )= 2× 650 cm²= 1300 cm²

kalau bener jangan lupa kasih hati dan bintangnya, jangan lupa kasih jawaban tercerdas / jawaban terbaik, dan jangan lupa follow ygy.

thank you