bantu jawab no 8 ya kak...terimakasih

Diket:
r=20:2=10
L lingkaran
=π.r^2.(1/2)
=3,14.10.10.(1/2)
=3,14.100.(1/2)
=314.1/2
=157
L segitiga
a=20 cm
t=24cm
=a. t/2
=20.24/2
=20.12
= 240 cm
luas bangun gabungan
=240+157
=397 cm
Semoga membantu