Does any one know how to do this one

Answer:
Step-by-step explanation:
x² = 10² - 6² = 100 - 36 = 64
x = √64 = √8*8 = 8
Right angle triangle, use Pythagorean theorem
(hypotenuse)² = (adjacent)² + (opposite)²
Answer:
The value of x and the 2nd leg of the triangle is 8 units
Step-by-step explanation:
Let's use the Pythagorean theorem to solve for x, this way:
Hypotenuse = 10 units
Leg 1 = 6 units
Leg 2 = x units
Now, replacing with the real values we have:
Leg 2 ² = Hypotenuse² - Leg 1²
x² = 10² - 6²
x² = 100 - 36
x² = 64
√x² = √64
x = 8 units
The value of x and the 2nd leg of the triangle is 8 units