Penjelasan dengan langkah-langkah:
gabungan 2 bangun
balok dan Limas segi empat
Balok =
p = 25cm
l = 8cm
t = 10cm
Luas = 2 (pl) + 2(PT) + 2(lt)
= 2(25× 8) + 2(25 × 10) + 2(8 × 10)
= 2 × 200 + 2 × 250 + 2 × 80
= 400 + 500 + 160
= 1.060 cm²
Volume = PLT
= 25 × 8 × 10 = 2.000cm³
Limas segi empat
p alas = 25cm
l alas = 8cm
alas segitiga = 8cm, 25cm
tinggi Limas = 15cm
Luas = L sisi 1 (alas) + luas sisi 2 + L S3 + L S4 + L S5
luas alas = PL = 25 × 8 = 200cm²
L ∆ = ½× a × t
= ½ × 8 × 15 = 60cm²
L∆ = ½ × 25 × 15 = 187,5cm²
= 200 + 2(60) + 2(187,5)
= 200 + 120 + 375 = 695cm²
Volume = ⅓ × luas alas × tinggi
= ⅓ × 200 × 15 = 1.000cm³
volume bangun 1 dan 2 = 2000 + 1000 = 3000cm²
luas bangun 1 dan 2 = 1.060 + 695 = 1.755cm²
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Verified answer
Penjelasan dengan langkah-langkah:
gabungan 2 bangun
balok dan Limas segi empat
Balok =
p = 25cm
l = 8cm
t = 10cm
Luas = 2 (pl) + 2(PT) + 2(lt)
= 2(25× 8) + 2(25 × 10) + 2(8 × 10)
= 2 × 200 + 2 × 250 + 2 × 80
= 400 + 500 + 160
= 1.060 cm²
Volume = PLT
= 25 × 8 × 10 = 2.000cm³
Limas segi empat
p alas = 25cm
l alas = 8cm
alas segitiga = 8cm, 25cm
tinggi Limas = 15cm
Luas = L sisi 1 (alas) + luas sisi 2 + L S3 + L S4 + L S5
luas alas = PL = 25 × 8 = 200cm²
L ∆ = ½× a × t
= ½ × 8 × 15 = 60cm²
L∆ = ½ × 25 × 15 = 187,5cm²
= 200 + 2(60) + 2(187,5)
= 200 + 120 + 375 = 695cm²
Volume = ⅓ × luas alas × tinggi
= ⅓ × 200 × 15 = 1.000cm³
volume bangun 1 dan 2 = 2000 + 1000 = 3000cm²
luas bangun 1 dan 2 = 1.060 + 695 = 1.755cm²