Question

Tolong caranya no 19

Answer 1

P = 2 lebar
Luas = p × l
800m2 = 2 l × l



20 m = lebar

panjang = 2lebar
= 2 × 20 m
= 40 m

keliling tanah=2 (p+l)
=2 (40m+20m)
=2 (60m)
=120m
biaya buat pagar=keliling×harga per meter
= 120m × Rp. 5000/meter
= Rp. 600.000
maka, jawabannya B