keliling persegi panjang96m.jika p:l=5:3 tentukan luas persegi panjang

k = 2p + 2l
96 = 2(5x) + 2(3x)
96 = 10x + 6x
96 = 16x
x = 96/16
x = 6

p = 5x
p = 5.6
p = 30m

l = 3x
l = 3.6
l = 18m

L = p X l
L = 30 x 18
L = 540 m²

K= 96m

p : l = 5:3

Atau p/l = 5/3

p = (5/3) l

K = 2(p+ l)

96 = 2 (5/3 l + l )

48 = (8/3 l)

48 × 3 = 8l

6× 3 = l

l (lebar) = 18 m

p = (5/3) lebar

p = 5/3 × 18 = 30 m

Luas = p x l

= 30 × 18

= 540 m2