Answer :
Distance between two points = √[( x₂ - x₁)² + (y₂ - y₁)²]
∴ distance between C and D = √[(x of C - x of D)² + (y of C - y of D)²]
= √[( 5 - 2)² + (6 - 2)²]
= √[( 3)² + (4)²]
= √(9 + 16)
∴ distance between C and D = 5 units
∴ distance between C and D = √[(x of C - x of D)² + (y of C - y of D)²]
= √[( 5 - 2)² + (6 - 2)²]
= √[( 3)² + (4)²]
= √(9 + 16)
∴ distance between C and D = 5 units