Tolong di jawab ya Sebuah taman berbentuk persegi panjang dengan ukuran panjang (5x - 4) meter dan lebar (x + 3) meter. Jika keliling taman 70 meter. Luas taman

cari x
keliling persegi panjang = 2p + 2l
70 = 2(5x - 4) + 2(x + 3)
70 = 10x - 8 + 2x + 6
70 = 12x - 2
12x = 70 + 2 = 72
x = 6

luas = p × l
= (5(6) - 4) × (6 + 3)
= 26 × 9
= 234 m^2

K = 2 ( p + l)
70 = 2 ( 5x - 4 + x + 3 )
70 = 2 (6x - 1)
70 = 12x - 2
70 + 2 = 12x
72 = 12x
6 = x

p = 5x - 4
5(6) - 4
30 - 4
26

l = x + 3
l = 6 + 3
l = 9

L = p x l
L = 26 x 9
L = 234 cm^2

Semoga Membantu