Question

Hello can someone please help with this question.

Answer 1

Answer:

x = 20.

Step-by-step explanation:

This is a right triangle, so by Pythagoras:

29^2 = x^2 + 21^2

x^2 = 29^2 - 21^2

x^2 =  400

x = √400

x = 20.

Answer 2

Answer:

20

Step-by-step explanation:

sqrt(29² - 21²)

sqrt(400)

= 20