Question

Question is on the picture

Answer 1

Answer is 2.2

Explanation

We can use the triangle of the two points to use Pythagorean theorem, leg 1 = 1, leg 2 = 2

1^2 + 2^2 = c^2

1 + 4 = c^2

5 = c^2

√ 5 = √ c^2

2.2 = c

The diagonal of the triangle or the length of the line is 2.2

Answer 2

C. √5 =2.236.

Explanation:

it's the sq root of 2²+1² = 5.