tjoegito
tanya yang lain coba bener gak nih jawaban
cynthia3
Dik = volume limas = 384 panjang sisi = 12 dit = luas limas = ...? jawab pertama kita mencari persegi 1. L = S × S = 12 ×12 = 144 2. Volume Limas = 1/3 × luas alas × Tinggi 384 = 1/3 × 144 × t 384 = 48 × T T = 384 ÷ 48 = 8 misalkan TO = tinggi OE = Luas alas ÷ 2 TO = 8 OE = 6 cm TE = TO² + OE² TE = 8² + 6² = 64 + 36 = √100 = 10 3. Luas Δ = 1/2 × BC × TE = 1/2 × 12 × 10 = 32 Luas selimut = 4 × 32 = 128 4. Luas Limas = Luas alas + Luas selimut = 144 + 128 = 272
t= 8/3
luas =144+4x(12x8/3)/2
luas=144+64
luas=208cm 2
panjang sisi = 12
dit = luas limas = ...?
jawab
pertama kita mencari persegi
1. L = S × S
= 12 ×12
= 144
2. Volume Limas = 1/3 × luas alas × Tinggi
384 = 1/3 × 144 × t
384 = 48 × T
T = 384 ÷ 48
= 8
misalkan TO = tinggi
OE = Luas alas ÷ 2
TO = 8
OE = 6 cm
TE = TO² + OE²
TE = 8² + 6²
= 64 + 36
= √100
= 10
3. Luas Δ = 1/2 × BC × TE
= 1/2 × 12 × 10
= 32
Luas selimut = 4 × 32
= 128
4. Luas Limas = Luas alas + Luas selimut
= 144 + 128
= 272