Find the perimeter of the following shape, rounded to the nearest tenth: 9.8 16 17.9 24

17.9

Step-by-step explanation:

A (-3,5)

B (1,7)

C (3,3)

D (-1,1)

To find the perimeter, the distance between each point or the length of each side must be found, so we use the distance formula.

d(distance) = √(x₂-x₁)² + (y₂-y₁)²

So, substitute numbers into the formula...

d = √(1 - -3)² + (7 - 5)² = √4² + 2² = √16 + 4 = √20 = 4.4721359 = Line AB

Repeat the steps and you find tha each length equals the same and that it is a square, so multiply √20 by 4 and you get 17.888543

Or about 17.9

b) well because you get well

answer: i guess 105 degrees?

step-by-step explanation: