Question

Perbandingan panfjang dan lebar persegi panjang 7:4 jika kelilingnya 132,maka luasnya adalah?

Answer 1

Panjang : 7x
lebar : 4 x
keliling : 2 (p+l)

keliling = 2 (7x + 4x)
132 = 2 (11x)
132. = 22 x
132/22 = x
6 = x

kemudian cari panjang dan lebar
p = 7x = 7.6 = 42
l = 4x = 4.6 = 24

luas = panjang x lebar
= 42 x 24
= 1008 cm persegi

Answer 2

keliling = 2(p+l)
132 = 2(7x+4x)
132=22x
x=6
p = 7x6 =42
l = 4x6 = 24
luas = p x  l = 42 x 24 = 1008