Jawab:
Penjelasan dengan langkah-langkah:
(2)
(a) Diketahui
PK = r = 18 cm
Diameter = 2r
Diameter = 18 × 2
Diameter = 36 cm ✅
(b) Apotema = PN
Diketahui
PN = 2MN
(maka)
r = MN + 2MN
18 = 3MN
MN = 18/3
MN = 6 cm.
Apotema = 2MN
Apotema = 2 × 6
Apotema = 12 cm ✅
(c) KL = tali busur
cari dulu NL
NL = √(PL²-PN²)
NL = √(18²-12²)
NL = √(324-144)
NL = √180
NL = 6√5 cm
maka
KL = NL + NL =
KL = 6√5 + 6√5
KL = 12√5 cm ✅
_____________
#Jenius - kexcvi
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Jawab:
(1) di gambar
(2)
Diameter = 36 cm
Apotema = 12 cm
KL = 12√5 cm
Penjelasan dengan langkah-langkah:
(1) di gambar ✅
(2)
(a) Diketahui
PK = r = 18 cm
Diameter = 2r
Diameter = 18 × 2
Diameter = 36 cm ✅
(b) Apotema = PN
Diketahui
PN = 2MN
(maka)
r = MN + 2MN
18 = 3MN
MN = 18/3
MN = 6 cm.
Apotema = 2MN
Apotema = 2 × 6
Apotema = 12 cm ✅
(c) KL = tali busur
cari dulu NL
NL = √(PL²-PN²)
NL = √(18²-12²)
NL = √(18²-12²)
NL = √(324-144)
NL = √180
NL = 6√5 cm
maka
KL = NL + NL =
KL = 6√5 + 6√5
KL = 12√5 cm ✅
_____________
#Jenius - kexcvi