no 4,5,6...tolong dibantu ya kak ,mau dikumpulkan bsk.sekalian SM rumusnya

4.
Keliling persegi = 32 cm
Sisi = 32/4 = 8 cm
Luas = 8 × 8 = 64 cm2

Persegu panjang
Lebar = 64/16 = 4 cm
Panjang diagonal (D)
D^2 = 16^2 + 4^2 = 256 + 16 = 272
D = 4 akar 17

5.
Total rusuk = 72 cm
Sisi = 72/12 = 6 cm
Diagonal ruang = 6 akar 3

6.
(i) 6, 8, 10 => siku-siku
(ii) 4, 5, 6 => lancip
(iii) 7, 8, 9 => lancip
(iv) 9, 10, 15 => tumpul