bantuin dongk kaaaa makasih :)

Luas Segitiga = (a x t ): 2
a = 20cm
t = 10cm
Luas = 200cm² : 2 = 100cm²
Luas Setengah Lingkaran =
1/2 x πr² = 1/2 x 3,14 x 10 x 10 =
= 157cm²
Total = 157 + 100 = 257cm²