Question

Guest

mohon bantuannya yg a dan b

Answer 1

Archylea

Luas : 91
Keliling : 40

Answer 2

ipexhx

diketahui :
P = 2x + 5
L = 3y - 2
a. panjang dan keliling dalam x dan y
• keliling = 2 (P + L)
= 2 (2x + 5 + 3y - 2)
= 2 (3y + 2x + 3)
= 6y + 4x + 6
• luas = P . L
= (2x + 5) (3y - 2)
= 6xy - 4x + 15y - 10
= 15y - 4x + 6xy - 10
b. jika x = 4 dan y = 3
• keliling = 6y + 4x + 6
= 6.3 + 4.4 + 6
= 18 + 16 + 6 = 40
• luas = 15y - 4x + 6xy - 10
= 15.3 - 4.4 + 6.4.3 - 10
= 45 - 16 + 72 - 10 = 91