tolong dijawab ya!? dikumpulkan besok,, yg no. 7

a )lebar = 3/5p
keliling = 2 panjang + 2 lebar
208 m = 2p +2 (3/5 p)
208 m = 2p + 6/5 p
208 m = 10 / 5 p + 6 / 5 p
208 m = 16 / 5 p
1040 m = 16 p
p = 1040 m : 16
p = 65 m
l = 3/5 p
l = 3/5 x 65
l = 45 m
jadi panjang = 65 m lebar = 45 m

b) luas = p x l
= 65 m x 45 m
= 2.925 m^2
harga beli = 2.925 x Rp 300.00 - Rp 10.000.000
=Rp 877.500.000 - Rp 10.000.000
= Rp 867.500.000