tolong bantu yaa nomor 9 aja kok

9.

a= 14
b= 20√2
c= 45°

luas tanah= 1/2 .a.b. sin c
= 1/2 . 14. 20√2 .sin 45
= 1/2 . 14. 20√2 .1/2 √2
= 140 cm^2

harga tanah= 140 . 750000
= 105000000
= 105 juta rupiah

semoga mmbantu