Question

102. JAWABAN TERCERDAS MENANTI. JAWAB SEMUANYA. PAKAI CARA YANG BAIK THX

Answer 1

1)luas = (a +b)/2 . t
=(18+28)/2 . 12
=46 /2 . 12
=276 cm²

2)diameter = 20
jari jari = d/2 = 20/2=10

luas = πr²
=3,14 . 10 . 10
=314 cm²

3)L 1 = p . l
=24 . 16
=384cm²

L2 = (a . t)/2
=(12 . 8 ) /2

=48 cm²

lugab diatas
= 384 +48
=432cm²