marlenia16
A. Keliling Liat gambar Luas trapesium = x Jumlah sisi sejajar x tinggi = x (8 + 20) x 8 = x 28 x 8 = 112 cm² b. Keliling = 10 + 14 + 8 + 8 = 40 cm Luas = x (8 + 14) x 8 = x 22 x 8 = 88 cm² c. Keliing = Liat gambar Luas = x (5 + 16) x 4 = x 21 x 4 = 42 cm² d. Keliling = 4 + 15 + 9 + 15 = 43 cm Luas = x (4 + 9) x 12 = x 13 x 12 = 78 cm²
Luas trapesium = x Jumlah sisi sejajar x tinggi
= x (8 + 20) x 8
= x 28 x 8
= 112 cm²
b. Keliling = 10 + 14 + 8 + 8
= 40 cm
Luas = x (8 + 14) x 8
= x 22 x 8
= 88 cm²
c. Keliing = Liat gambar
Luas = x (5 + 16) x 4
= x 21 x 4
= 42 cm²
d. Keliling = 4 + 15 + 9 + 15
= 43 cm
Luas = x (4 + 9) x 12
= x 13 x 12
= 78 cm²