Question

Find the missing length of the triangle.

Answer 1

its √841

Explanation:

solution way; is the pythagorean theorem

[a×a+b×b=c×c]

21×21=441

20×20=400

c×c=441+400=841

c is √841

Answer 2

29 due the a^2 +b^2=c^2 in the Pythagorean theorem