Latihan Tugas Mandiri

Quiz
•
Mathematics
•
3rd Grade
•
Easy
Nelsy Ardini
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Sebuah jajar genjang memiliki ukuran sisi alas 20 cm dan tinggi 10 cm, maka luas jajar genjang tersebut adalah.....
10 cm²
30 cm²
60 cm²
200 cm²
Answer explanation
Luas = alas × tinggi
L = 20 × 10
L = 200 cm²
2.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Sebuah jajar genjang memiliki ukuran sisi sejajar masing-masing 10 cm dan 15 cm, maka keliling jajar genjang tersebut adalah....
25 cm
50 cm
75 cm
100 cm
Answer explanation
Keliling = 2 × (sisi sejajar 1 + sisi sejajar 2)
K = 2 × (10 + 15)
K = 2 × 25
K = 50 cm
3.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Sebuah jajar genjang memiliki luas 120 cm². Jika alas jajar genjang adalah 12 cm, maka tinggi jajar genjang tersebut adalah...
10 cm
20 cm
30 cm
40 cm
Answer explanation
tinggi = Luas : alas
t = 120 : 12
t = 10 cm
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Sebuah jajar genjang memiliki luas 160 cm². Jika tinggi jajar genjang adalah 10 cm, maka panjang alas jajar genjang tersebut adalah..
10 cm
12 cm
14 cm
16 cm
Answer explanation
alas = Luas : tinggi
a = 160 : 10
a = 16 cm
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Berapa luas dan keliling jajar genjang tersebut ?
200 cm² dan 70 cm
240 cm² dan 78 cm
200 cm² dan 78 cm
240 cm² dan 70 cm
Answer explanation
Luas = alas × tinggi
L = 24 × 10
L = 240 cm²
Keliling = 2 × (sisi sejajar 1 + sisi sejajar 2)
K = 2 × (24 + 15)
K = 2 × 39
K = 78 cm
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Perhatikan gambar jajar genjang di samping !
Berapa keliling jajar genjang tersebut
17 cm
20 cm
24 cm
26 cm
Answer explanation
AD² = AE² + DE² AD² = 4² + 3² AD² = 16 + 9 AD² = 25 AD = V25 AD = 5 cm
Keliling = 2 × (sisi sejajar 1 + sisi sejajar 2)
K = 2 × [(DE + CE) + AD]
K = 2 × [(3 + 5) + 5]
K = 2 × [8 + 5]
K = 2 × 13
K = 26 cm
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Diketahui keliling sebuah jajar genjang adalah 52 cm. Jika panjang salah satu sisinya 16 cm, maka panjang sisi yang lainnya adalah ...
10 cm
20 cm
30 cm
40 cm
Answer explanation
Keliling = 2 × (a + b)
52 = 2 × (16 + b)
52 = (2 × 16) + (2 × b)
52 = 32 + 2 × b
2 × b = 52 – 32
2 × b = 20
b = 20 : 2
b = 10 cm
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