Question

Please help step by step :)

Answer 1

Answer: √698 or 26.42 (2 d.p.)

Explanation:

Pythagoras' Threorem is a² + b² = c²

Substitute 13 for a and 23 for b

13² + 23² = x²

169 + 529 = x²

698 = x²

x = √698 = 26.42 (2 d.p.)