1)
∠AOB = 72°
Luas AOB = 770 cm²
Luas Lingkaran
= 360°/72° x Luas AOB
= 5 x 770 cm²
= 3.850 cm²
Jawaban A
2)
R = 13 cm
r = 5 cm
l = 15 cm
p² = l² + (R - r)²
p² = 15² + (13 - 5)²
p² = 15² + 8²
p² = 225 + 64
p² = 289
p = √289
p = 17 cm
1.
770 cm² = 1/5 × L lingkaran
L lingkaran = 770 × 5
L lingkaran = 3850 cm²
jadi jawabannya A..
|
2. 15² = p² - (13 - 5)²
225 = p² - 8²
225 = p² - 64
= 17
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1)
∠AOB = 72°
Luas AOB = 770 cm²
Luas Lingkaran
= 360°/72° x Luas AOB
= 5 x 770 cm²
= 3.850 cm²
Jawaban A
2)
R = 13 cm
r = 5 cm
l = 15 cm
p² = l² + (R - r)²
p² = 15² + (13 - 5)²
p² = 15² + 8²
p² = 225 + 64
p² = 289
p = √289
p = 17 cm
Jawaban A
1.
770 cm² = 1/5 × L lingkaran
L lingkaran = 770 × 5
L lingkaran = 3850 cm²
jadi jawabannya A..
|
|
|
|
2. 15² = p² - (13 - 5)²
225 = p² - 8²
225 = p² - 64
p² = 225 + 64
p² = 289
p = √289
= 17
jadi jawabannya A..