1. √(10² – 8²)
= √(100 – 64)
= √36
= 6 cm
2. √(12² – 4²)
= √(144 – 16)
= √128
= √2×64
= 8√2 cm
3. √(15² + 6²)
= √(225 + 36)
= √261
= √29×9
= 3√29 cm
1. √(10² – 8²)
= √(100 – 64)
= √36
= 6 cm
2. √(12² – 4²)
= √(144 – 16)
= √128
= √2×64
= 8√2 cm
3. √(15² + 6²)
= √(225 + 36)
= √261
= √29×9
= 3√29 cm