
BANGUN DATAR
Presentation
•
Mathematics
•
4th - 6th Grade
•
Hard
Aldha Putri Aprilia
FREE Resource
3 Slides • 0 Questions
1
Luas Layang-layang
1. Pengertian layang-layang :
Layang-layang adalah bangun datar yang dibentuk oleh dua buah segitiga sama kaki yang atasnya sama panjang dan berimpit.
2
Rumus Layang-layang
Luas layang-layang = ½ x diagonal 1 x diagonal 2
Keliling layang-layang = a + b + c + d (semua sisi ditambahkan)
3
Contoh Soal
Gambar layang-layang memiliki panjang sisi yang berdekatan berturut-turut adalah 13 dan 37 cm. Diagonal 1 dan 2 berturut-turut adalah 40 cm dan 24 cm. Hitunglah luas dan keliling layang-layang tersebut!
Pembahasan
Diketahui:
a = 13 cm
b = 37 cm
d1 = 40 cm
d2 = 24 cm
Ditanya: Luas dan keliling layang-layang
Jawab:
Luas layang-layang = ½ x diagonal 1 x diagonal 2 = ½ x 40 x 24 = 480 cm persegi.
Keliling layang-layang = a + b + c + d = 2 (13 + 37) = 100 c
Luas Layang-layang
1. Pengertian layang-layang :
Layang-layang adalah bangun datar yang dibentuk oleh dua buah segitiga sama kaki yang atasnya sama panjang dan berimpit.
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