Question

Keliling sebuah kebun 280meter.jika panjang kebun 4/3x lebarnya,berapa cm persegi luasnya?

Answer 1

K = 2(p+l) = 280 m
p+l = 280 : 2 = 140
perbandingan = p : l = 4 : 3
jumlah perbandingan = 4 + 3 = 7
p = × 140 m = 80 m
l = × 140 m = 60 m
L = 80 × 60 cm² = 4800 m²

Answer 2

K = 2 (p+l)
280 = 2 (4/3 l + l)
140 = 7/3 l
lebar = 140 x 3 / 7
lebar = 60 meter
panjang = 4/3 x 60 = 80 meter
Luas = 60 x 80 = 4.800 m²