Relax

Respuesta :

Answer:

Step-by-step explanation:

a^2 +b^2 =c^2

279^2 +440^2=521^2

77841 + 193600= 271441

271441= 271441

(I used the pythagorean theorem formula. I knew 521 was c because c is the hypotenuse, which is the longest side. The other two sides are interchangable.)

Hopefully this helps!