Question

Perbandingan panjang dan lebar 3:2 jika keliling 40maka luas

Answer 1

Panjang = 3
lebar = 2

K = 2(p+l)
40 = 2(3 + 2)
40 = 2(5)
40 = 10

=> 40/10 = 4

=> p x 4 = 3 x 4 = 12
=> l x 4 = 2 x 4 = 8

L = p x l
L = 12 x 8
L = 96 cm²