Tolong bantu no 4 dan 6 dong

4 panjang = 1+3+2 = 6cm
lebar = 1+2 =3
skala = 1:500
panjang sebenarnya = 6 / 1:500 = 6 x 500/1 = 3000 cm = 30 m
lebar sebenarnya = 3 / 1:500 = 3 x 500/1 = 1500 cm = 15 m
luas kantor sebenarnya =
panjang x lebar =
30 x 15 = 450 m²

6. √1000-2√40 =
√100x10 -2√4x10 =
10√10 - 4√10 =
6√10