tolong dijawab yh no 1sampai5

1.)luas segitiga
=½×a×t
=½×35×24
=½×830
=415cm²

2.)luas lingkaran
=¼×π×d²
=¼×22/7×42×42
=¼×22/7×1764
=¼×5544
=1386÷2
=693cm²

4.)
luas persegipanjang
=p×l
=20×14
=280cm²

luas trapesium
=½×(jumlah sisi sejajar)×t
=½×(30+20)×16
=½×(50)×16
=½×800
=400cm²

maaf kalo sala