5+ 4 * 2 + 6 – 2 * 2 - 1 add two different sets of parentheses to make the number 19 i already know (5 + 4) * 2 + 6 – 2 * 2 - 1 but i need one more you so much

the missing leg length is 2√70.

Step-by-step explanation:

This is a right triangle in which the hypotenuse is 19 ft and one of the legs is 9 ft.  Using the Pythagorean Theorem, we find the length of the other leg:

x^2 = (19 ft)^2 - (9 ft)^2 = 361 - 81 = 280, or 4*70

Then the missing leg length is √4√70, or 2√70.