jawab .................................. no.5......

sekala 1 : 400
a = 8 x 400 = 3.200 cm = 32 m
b = 6 x 400 = 2.400 cm = 24 m
c = 5 x 400 = 2.000cm = 20 m
a. luas tanah =
[tex] \frac{(32 + 24)}{2} \times 20[/tex]
28 x 20 = 560m²
b. Rp. 350.000,00 x 560m² = Rp. 196.000.000,00

maaf kalau salah