Tolong dong yang baik hati

a) Sisi = 5 cm
Keliling = 4 × s = 4 × 5 = 20 cm
Luas = s × s = 5 × 5 = 25 cm²

b) Sisi = ?, Kel = ?,
Luas = 64 cm²
Sisi = √64 = 8
Keliling = 4 × s = 4 × 8 = 32 cm

c) Sisi = ?, Luas = ?
Keliling = 36 cm
Sisi = 36 ÷ 4 = 9 cm
Luas = s × s = 9 × 9 = 81 cm²

d) Sisi =?, Keliling = ?
Luas = 100 cm²
Sisi = √100 = 10 cm
Keliling = 4 × s = 4 × 10 = 40 cm

e) Sisi = 12 cm
Keliling = 4 × s = 4 × 12 = 48 cm
Luas = s × s = 12 × 12 = 144 cm²

Semoga membantu

a) Keliling = 4s = 4×5 = 20 cm
Luas = s² = 5² = 25 cm²

b) Sisi =√luas = √64 = 8 cm
Keliling = 4s = 4×8 = 32 cm

c) Sisi = Keliling÷4 = 36÷4 = 9 cm
Luas = s² = 9² = 81 cm²

d) Sisi = √luas = √100 = 10 cm
Keliling = 4s = 4√10 = 40 cm

e) Keliling = 4s = 4×12 = 48 cm
Luas = s² = 12² = 144 cm²

Semoga membantu ^_^
Tandai sebagai jawaban terbaik ya :)