.tolong kuy nomor 23 kuy...

S = K/4
= 48/4
= 12 cm
Maka;
L = S²
= 12*12
= 144 cm²

JAWABAN :

Cari dulu keliling persegi

Keliling Persegi
48 cm = 4 x sisi
sisi = 48/4
= 12 cm

Luas Persegi
= sisi x sisi
= 12 x 12
= 144 cm