Question

Tolong kerjakan no 24 dan 25 ya kk... Aku gk paham jelasin ya

Answer 1

K = 2 (p+l)
42 = 2 (p+l)
(p+l) = 42/2
p+l = 21

p-l = 5
21-l-l = 5
21-2l = 5
-2l = 5-21
-2l = -16
2l = 16
l = 8

p-l = 5
p-8 = 5
p = 13

luas = p x l = 13 x 8 = 104 (C)

Answer 2

Rumus persegi panjang =

P kali R = panjang kali lebar

Diket = panjang 42

Lebar 5

Tanya = luas?

Jawab

= (P kali L) =42 kali 5 = 210.