Latihan Soal Lingkaran

Quiz
•
Mathematics
•
8th Grade
•
Easy
Ledya Ella Sartika
Used 1+ times
FREE Resource
9 questions
Show all answers
1.
OPEN ENDED QUESTION
3 mins • 1 pt
Sebuah juring memiliki sudut 90º dan jari-jarinya 7 cm. Berapakah panjang busur juring tersebut?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Sebuah juring memiliki sudut 60° dan diameter lingkaran 20 cm. Berapakah luas juringnya?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Carilah luas juring AOB pada lingkaran berikut, jika diketahui θ = 72° dan jari-jari r = 14 cm!
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Answer explanation
Luas juring = 72/360 × 22/7× 14² = 72/360 × 22/7 × 14 × 14 = 123,2
4.
OPEN ENDED QUESTION
3 mins • 1 pt
Indah akan membuat kerajinan dari kertas warna dengan sudut pusat 135 derajat, jika jari
jari kipas 14 cm, maka luas kipas yang dibuat Indah adalah .. cm persegi
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Answer explanation
Luas kipas = luas juring
135/360 × 22/7 × 14² = 135/360 × 22/7 × 14 × 14 = 231 cm²
5.
OPEN ENDED QUESTION
3 mins • 1 pt
Panjang busur lingkaran adalah....
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Answer explanation
Panjang busur = 80/360 × 2 × 22/7 × 7 = 9,7
6.
OPEN ENDED QUESTION
3 mins • 1 pt
Tentukan besar sudut c!
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Answer explanation
60 + c = 180
c = 180 - 60
c = 120
7.
OPEN ENDED QUESTION
3 mins • 1 pt
Perhatikan gambar di atas, panjang jari OA adalah 16 cm dan panjang garis singgung AP adalah 30 cm. Panjang garis OP adalah...
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Answer explanation
OP = √OA² + AP²
= √16² + 30²
= √256 + 900
= √1.156
= 34
8.
OPEN ENDED QUESTION
3 mins • 1 pt
Dua buah lingkaran masing masing berjari-jari 5 cm dan 3 cm. Jika jarak kedua titik pusatnya adalah 10 cm. Panjang garis singgung persekutuan dalamnya adalah....
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Answer explanation
d² = p² - (r besar + r kecil)²
= 10² - (5+3)²
= 100 - (8)²
= 100 - 64
= 36
d = √36 = 6
9.
OPEN ENDED QUESTION
3 mins • 1 pt
Panjang jari-jari dua lingkaran masing-masing
7 cm dan 23 cm
Jarak kedua pusatnya 34 cm. Hitunglah panjang garis singgung persekutuan luarnya!
Evaluate responses using AI:
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Answer explanation
l² = p² - (r besar - r kecil)²
l² = 34² - (23-7)²
l² = 34² - (16)²
l² = 1.156 - 256
l² = 900
l = ✓900 = 30
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