Please jawab ya no 1 sampai 5. Please...

1. K = 4 × s
= 4×23 cm
=92cm2

L= p×l
=23 × 23
=529 cm2

2. k = 2×(p+l)
=2×(21+15)
=72cm2

L=p×l
=21×15
=315cm2

3.luas =p×l
300cm= 15 × l
l= 300 ÷ 15
=20 cm

k=2× (p+l)
=2×(15+20)
=70cm2

4. k = s + s + s
=114 cm =3 s
s = 38 cm

5.luas = 1/2 ×a × t
= 1/2 × 16 × 23
=184 cm2