tolong dijawab ini penting bsok udh mau dikumpull

Keliling = 2 ( p + l )
52 = 2(2x + 6 + 3x)
52 = 2(5x + 6)
52 = 10x + 12
52 - 12 = 10x
40 = 10x
x = 40/10
x = 4

Panjang persegi panjang
= 2x + 6
= 2(4) + 6
= 8 + 6
= 14 cm

Lebar persegi panjang
= 3x
= 3(4)
= 12

Luas persegi panjang
= p x l
= 14 x 12
= 168 cm² (c)