Answer:
a = 8 m.
Explanation:
This is a right triangle, so the Pythagorean Theorem applies.
The Pythagorean Theorem states that the legs of a triangle, squared, equals the hypotenuse, squared.
The legs of a triangle are the sides that make the right angle.
The hypotenuse is the longest side of a right triangle.
Here, I am solving for one of the legs.