Question

Tolong jawab ini please,,
nomor 4-6
pake cara kerja ya

Answer 1

4.k.Persegi = 60
sisi = 3x
k.Persegi = 4 x s = 4 x 3x = 12x
12x = 60
x = 5
sisi = 3x = 3(5) = 15

5.
sisi awal = 9
sisi akhir = 9-2x
kell awal = 9 x 4 = 36
kell. Akhir = (9 - 2x) * 4 = 36 - 8x

6.
k.Persegi Panjang = 64
p : l = 5 : 3
P & L ?
k.Persegi Panjang = 2(p + l)
64 = 2(p + l)
(p + l) = 32
anggap p = 5x; l = 3x;
(5x + 3x) = 32
8x = 32
x = 4
panjang = 5x = 5 * 4 = 20
lebar = 3x = 3 * 4 = 12 
:))

Answer 2

4.) 4*3x=60
12=3x
x=4
panjang sisi= 3x=3*4=12

5.) maaf gak ngerti

6.)  2(p+l)=64
p+l=32
p:l=5:3=32
p= 5/8*32=20
l=3/8*32=12

p= 20 cm
l=12 cm