Page 244 - Buku Paket Kelas 7 Matematika Semester 2

Tabel 8.11b Keliling dan luas layang-layang
No.
Gambar Layang-layang
Diagonal 1
Diagonal 2
Keliling
Luas
1.
6 cm 8 cm
15 cm
16 cm
16 cm
21 cm
2(10 + 17)
= 54
12 × 16
× 21 = 168
2.
9 cm 12 cm
16 cm
24 cm
24 cm
25 cm
2(15 + 20)
= 70
12 × 24
× 25 = 300
3.
7 cm 24 cm 10 cm
48 cm
17 cm
48 cm
2(25 + 26)
= 102
12 × 17
× 48 = 408
236 Kelas VII SMP/MTs Semester 2
15 cm
10 cm
20 cm
17 cm
25 cm
17 cm
25 cm 21 cm
26 cm