Perbandingan panjang dan lebar persegi panjang 7 : 4 .Jika kelilingnya 132 m , luasnya adalah…

K = 2(p +)
132 = 2(7x + 4x)
132 = 2(11x)
132 = 22x
x = 6

P = 7x
= 7(6)
= 42
L = 4x
= 4(6)
= 24

L = p x l
L = 42 x 24
L = 1.008 m^2