Answer:
18
Step-by-step explanation:
a² + b² = c²
a² + 80² = 82²
a² + 6400 = 6724
a² = 324
a = √324
a = 18
Answer: a = 18
The pythagorean theorem says that the sum of the square of the two legs of a triangle is equal to the square of the hypotenuse.
The two legs are 80 and a, and the hypotenuse is 82 which gives us
80² + a² = 82²
a = 18.
B
