Question

Find the perimeter of triangle ABC round your answer to the nearest tenth

25.1 units

17.0unit

25.9unit

32.1 units

Answer 1

We can use the distance formula on all three points to find the perimeter.

`\sqrt{(x.2 - x.1)^(2) + (y.2 - y.1)^(2)}`

We can plug in the values for each of the coordinates to find each distance.

√(4 - (-4))^2 + (5 - (-1))^2 = 10

√(4 - 4)^2 + (-2 - 5)^2 = 7

√(4 - (-4))^2 + (-2 - (-1))^2 = 8.1

8.1 + 7 + 10 = 25.1

Your answer is 25.1