Jawab:
1.
Dit:
Hitunglah keliling dan luas bangun gabungan pada gambar di samping
Peny:
LG = L1 + L2
L1 = 50 cm x 23 cm
= 1150 cm³
L2 = 20 cm x 20 cm
= 400 cm³
LG = 1150 cm³ + 400 cm³
=1550 cm³
KG = K1 + K2
K1 = p + l x 2
= 50 cm + 23 cm x 2
= 146 cm²
K2 = S + S + S + S
= 20 cm + 20 cm + 20 cm + 20 cm
= 80 cm²
KG = 146 cm² + 80 cm²
= 226 cm²
2.
Dit :
LG = L1 + L2 + L3
L1 = p x l
= 2 cm x 3 cm
= 6 cm³
L2 = p x l
= 8 cm x 5 cm
= 40 cm³
L3 = p x l
= 5 cm x 4 cm
= 20 cm³
LG = 6 cm³ + 40 cm³ + 20 cm³
= 66 cm³
KG = K1 + K2 + K3
= 2 cm + 3 cm x 2
= 10 cm²
K2 = p + l x 2
= 8 cm + 5 xm x 2
= 21 cm²
K3 = p + l x 2
= 5 cm + 4 cm x 2
= 18 cm²
KG = 10 cm² + 21 cm² + 18 cm²
= 49 cm²
TERCERDAS YAH KALAU BISA HEHE MAKSA
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Jawab:
1.
Dit:
Hitunglah keliling dan luas bangun gabungan pada gambar di samping
Peny:
LG = L1 + L2
L1 = 50 cm x 23 cm
= 1150 cm³
L2 = 20 cm x 20 cm
= 400 cm³
LG = 1150 cm³ + 400 cm³
=1550 cm³
KG = K1 + K2
K1 = p + l x 2
= 50 cm + 23 cm x 2
= 146 cm²
K2 = S + S + S + S
= 20 cm + 20 cm + 20 cm + 20 cm
= 80 cm²
KG = 146 cm² + 80 cm²
= 226 cm²
2.
Dit :
Hitunglah keliling dan luas bangun gabungan pada gambar di samping
Peny:
LG = L1 + L2 + L3
L1 = p x l
= 2 cm x 3 cm
= 6 cm³
L2 = p x l
= 8 cm x 5 cm
= 40 cm³
L3 = p x l
= 5 cm x 4 cm
= 20 cm³
LG = 6 cm³ + 40 cm³ + 20 cm³
= 66 cm³
KG = K1 + K2 + K3
K1 = p + l x 2
= 2 cm + 3 cm x 2
= 10 cm²
K2 = p + l x 2
= 8 cm + 5 xm x 2
= 21 cm²
K3 = p + l x 2
= 5 cm + 4 cm x 2
= 18 cm²
KG = 10 cm² + 21 cm² + 18 cm²
= 49 cm²
TERCERDAS YAH KALAU BISA HEHE MAKSA