Uraian nomer 1 yha tolong

K = 2 ( p + l )
36 = 2 ( x + 2 + 3x – 4 )
36 = 2 ( 4x – 2 )
36 = 8x – 4
8x = 36 + 4
8x = 40
x = 5m

• Panjang = x + 2 = 5 + 2 = 7m
• Lebar = 3x – 4 = 3( 5 ) – 4 = 11m

• Luas persegi panjang
= p x l
= 7 x 11
= 77m²