tolong dibantu, terima kasih

AC² = AB² + BC²
AC² = 2² + 2²
AC² = 4 + 4
AC² = 8
AC = √8
AC = 2√2 cm

AD = AC = 2√2 cm
DE = AC = 2√2 cm

AE² = AD² + DE²
AE² = (2√2)² + (2√2)²
AE² = 8 + 8
AE² = 16
AE = √16
AE = 4 cm (B)