Question

Plis di jwb butuh tu bsk 10,12dan13

Answer 1

12. s= 15,30 cm, karena persegi semua sisinya sama
keliling 4xs= 4x15,300 = 61,2 cm
Luas = sxs = 15,3 x 15,3 =234,09 cm
13. massa jenis = massa / volume = 4,5 x 10^3 g / 7 x 10^2 cm^3 = 0,643 x 10^1