Bangun Ruang
13.
Limas segi empat
v = 1/3 × A × t
A = 3v/t
A = 3 × 4725/27
A = 4725/9
luas alas limas = 525 cm²
14.
Limas layang layang
t = 3v/A
t = 3 × 500 / (1/2 × 15 × 10)
t = 3 × 500/75
t = 500/25
tinggi limas = 20 cm
Jawaban:
13. d. 525 cm²
14. c. 20 cm
Penjelasan dengan langkah-langkah:
No. 13
Volume Limas = 1/3 x Luas Alas x Tinggi
4725 cm³ = 1/3 x Luas Alas x 27 cm
4725 cm³ x 3 / 27 cm = Luas Alas
Luas Alas = 525 cm² (D)
No. 14
Luas Layang-layang = 1/2 x D1 x D2
Luas Alas = 1/2 x 15 x 10
Luas Alas = 75 cm²
Volume Limas = 1/3 x 75 cm² x Tinggi
500 cm³ = 25 cm² x Tinggi
Tinggi = 500/25
Tinggi = 20 cm (C)
#dnft
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Bangun Ruang
13.
Limas segi empat
v = 1/3 × A × t
A = 3v/t
A = 3 × 4725/27
A = 4725/9
luas alas limas = 525 cm²
14.
Limas layang layang
v = 1/3 × A × t
t = 3v/A
t = 3 × 500 / (1/2 × 15 × 10)
t = 3 × 500/75
t = 500/25
tinggi limas = 20 cm
Jawaban:
13. d. 525 cm²
14. c. 20 cm
Penjelasan dengan langkah-langkah:
No. 13
Volume Limas = 1/3 x Luas Alas x Tinggi
4725 cm³ = 1/3 x Luas Alas x 27 cm
4725 cm³ x 3 / 27 cm = Luas Alas
Luas Alas = 525 cm² (D)
No. 14
Volume Limas = 1/3 x Luas Alas x Tinggi
Luas Layang-layang = 1/2 x D1 x D2
Luas Alas = 1/2 x 15 x 10
Luas Alas = 75 cm²
Volume Limas = 1/3 x 75 cm² x Tinggi
500 cm³ = 25 cm² x Tinggi
Tinggi = 500/25
Tinggi = 20 cm (C)
#dnft