Question

Please help me on this

Answer 1

80mm

Explanation:

According to Pythagorean theorem :

a² + b² = c²

=> a² + (60)² = (100)²

=> a² + 3600 = 10000

=> a² = 10000 - 3600

=> a² = 6400

=> a = √(6400)

=> a = 80

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