Question

Tolong dihitung luas permukaan dan volumenya ya


besok di kumpul​

Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

Dik = GABUNGAN BANGUN RUANG

BALOK dan LIMAS

_BALOK

PANJANG = 70 CM

LEBAR = 10 CM

TINGGI = 15 CM

_ LIMAS

TINGGI SISI TEGAK = 12 CM

TINGGI SISI MIRING = 35 CM

DIT : V DAN LP.......?

_ _

V. BALOK = La × t

L. BALOK = 2 { pl × pt × lt }

V. LIMAS = ⅓ La × t

L. LIMAS = La × n + Lst

_

V. Balok = La × t

= ( 70 × 10 ) × 15

= 700 × 15

= 10.500 cm³

V. Limas = La × t

= ( 70 × 10 ) × 12

= 700 × 12

= 8.400 cm³

=

= . + .

= 10.500 + 8.400

=18.900 ³

L. Balok = 2 × ( pl + lt + pt)

= 2 × [ ( 70 × 10 )+( 10 × 15)+( 70 × 15)

= 2 × ( 700 + 150 + 1.050 )

= 1.900 cm ²

L. Limas = La × n + Lst

= [ 70 × 10 ] × 4 + [½ 10 × 35 ]

= 700 × 4 + 175

= 2800 + 175

= 2975 cm²

+

1900 + 2975

= 4875 ²