Tolong dijawab dengan cara ya:D​

dik : s = (4y + 1) cm

dit : k = … ?

l = … ?

k & l jika y = 5

jawab :

k = 4s

= 4(4y + 1)

= 16y + 4

l = s²

= (4y + 1)²

= 16y² + 8y + 1

k jika y = 5

k = 16y + 4

= 16(5) + 4

= 84 cm

l jika y = 5

l = 16y² + 8y + 1

= 16(5)² + 8(5) + 1

= 16(25) + 8(5) + 1

= 441 cm²