
Quiz Materi Lingkaran
Authored by Prestarina Ginting
Mathematics
12th Grade
Used 23+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika panjang sisi segiempat 14cm. Luas daerah yang diarsir warna kuning adalah ⋯ cm2.
320
105
504
203
Answer explanation
Dik: Pj.sisi = Pj.diameter = 14 cm
r = 7cm
Dit: Luas arsiran warna kuning....cm2
Jb: Lo = 22/7x7x7 = 154 cm2
Luas 2 segitiga = Luas persegi dan Pj.sisinya = jari-jari (r) = 7x7 = 49 cm2
So Luas arsiran warna kuning = Lo - Lpersegi = 154 cm2 - 49 cm2= 105 cm2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dari gambar tersebut. Luas daerah yang diarsir adalah.....
1.292 cm2
1.922 cm2
1.329 cm2
1.239 cm2
Answer explanation
Dik: r = 14 cm
s = 14+26=40 cm
Dit: Luas yang diarsir=.....?
Jb: Luas yang diarsir = Luas persegi - Luas 1/2 lingkaran
L.yang diarsis = (40cmx40cm) - (1/2.22/7.14.14)
L.yang diarsir =1.600 cm2 - 308 cm2 = 1.292 cm2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Diketahui suatu juring lingkaran dengan ukuran sudut pusat 1800. Jika luas juring tersebut adalah 77 cm2 maka jari-jari lingkaran tersebut adalah .....
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Dari gambar berikut, keliling daerah yang diarsir adalah ....
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Pak Santosos memiliki lahan dibelakang rumahnya berbentuk persegi dengan sisi 28 m. Taman tersebut sebagian dibuat kolam (tidak diarsisr) dan sebagian lagi rumput hias (diarsisr). Jika biaya pemasangan rumput Rp.50.000/m2 . Sedangkan biaya tukang pemasangan rumput Rp.250.000,-
a. Tentukan keliling lahan rumput milik Pak Santosos tersebut
b. Tentukan anggaran yang harus disiapkan oleh Pak Santoso untuk mengolah lahan rumput tersebut.
Answer explanation
Dik: s=28 m
r=14 m
biaya pemasangan rumput Rp.50.000/m2
biaya tukang pemasangan rumput Rp.250.000,-
Dit: a. Keliling lahan rumput=.... m
b. Anggaran yang harus disiapkan oleh Pak Santoso untuk mengolah lahan rumput= Rp. .......
Jb: a. Keliling Lahan rumput = Keliling Persegi - Keliling Lingkaran
= ( 4x28m) - (2.22/7.14m)
= 112 - 88 = 24 m
b.Luas Lahan rumput = Luas Persegi - Luas Lingkaran
= (28mx28m) - (22/7.14m.14m)
= 784 m2 -616 m2 = 168 m2
Anggaran yang harus disiapkan oleh Pak Santoso untuk mengolah lahan rumput= Rp. 250.000 + (168m2 x Rp.50.000)
= Rp.250.000 + Rp.8.400.000
=Rp.8.650.000,-
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui jarak pusat sumbu gir pada sepeda X adalah 70cm. JIka diameter gir belakang 15cm dan gir depan 10cm, maka taksiran terdekat panjang rantai penghubung kedua gir tersebut adalah....
70 cm
68 cm
86 cm
69 cm
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