Question

What is the length of the line?

Answer 1

Explanation:

Pretend you see a right triangle here. From the lower end of the line go up 5 and you will be on the same horizontal as the upper end of the line. Go over 6 units and you close your triangle. This is a right triangle with legs 5 and 6 units long. We are looking for the hypotenuse of this triangle. Use Pythagorean's Theorem:

`5^2+6^2=??^2`

25 + 36 = ??² and

61 = ??² so

?? = √61