Tolong bantu aku dlm mengerjakan pr, beserta caranya nomor 2&3

2. L = s^2
729 = s^2
s = √729
s = 27 cm

Keliling persegi
= 4s
= 4(27)
= 108 cm

3. L = s^2
676 = (1/2 b)^2
1/2 b = √676
1/2 b = 26
b = 26 × 2
b = 52 cm