Question

What is the perimeter of trapezoid JKLM?


Round your answer to the nearest tenth.

http://static.k12.com/calms_media/media/1422500_1423000/1422761/1/5e6290c41d8ad3c679497f82c38faccae34f829e/MS_PA_131002_171210.jpg

Answer 1

Do you know the distance formula?
Try using that for each of the points and add the distances.

Distance formula: \(D = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \)

Answer 2

well, 2 sides are rather obvious, and the other 2 sides are the same length

Answer 3

From Mathematica 9,\[\text{Round}\left[5+3+2 \sqrt{10},0.1\right]=14.3 \]

Answer 4

Thank you all <3