Tolong dgn cara y..​

no 8

lebar = ( 54 – ( 3 × 2 )) ÷ 4

=( 54-6) ÷ 4

= 48 ÷ 4

=12cm

panjang = 12 cm + 3 cm = 15 cm

luas = 12 × 15 =180 cm