Keliling persegi panjang = 130 Panjang = 30 Lebar ? Luas ? Mohon dibantu yaa tugas adikku, aku lupa rumus

langsung aja ya

K= 130
2×(p+l) = 130
p+l = 130/2
p + l = 65
l = 65 - p
l = 65 - 30
l = 35 cm
Lebar = 35 cm

Luas = p×l = 30×35 = 30×(30+5) = 30×30 + 30×5 = 900 + 150 = 1.050 cm^2

K= 2(p+l)
130= 2(30+l)
130= 60 + 2l
70= 2l
l= 35 cm

b.30 x 35 = 1050 cm