what is the 2nd leg if the 1st leg is 20 and the hypotenuse is 30?

To find the length of the 2nd leg in a right triangle, you can use the Pythagorean theorem.

Pythagorean theorem: a² + b² = c²
where a and b are the lengths of the legs of the triangle and c is the length of the hypotenuse.
Given that the 1st leg is 20 and the hypotenuse is 30, we can substitute these values into the formula:
20² + b² = 30²
400 + b² = 900
b² = 900 - 400
b² = 500
b = √500
b ≈ 22.36
Therefore, the length of the 2nd leg is approximately 22.36.