Question

What is the perimeter of trapezoid EFGH?


Round your answer to the nearest tenth.

http://static.k12.com/calms_media/media/1422500_1423000/1422760/1/afb729b0fddb0fb53b5f1c06939d1511eb6fd629/MS_PA_131002_171209.jpg

Answer 1

A.
20.0 units

B.
17.2 units

C.
16.5 units

D.
10.5 units

Answer 2

The perimeter is just the length of all sides added together. The horizontal sizes are easy enough, just count the length. The diagonal sides are a use of Pythagorean's theorem, \(a^2+b^2=c^2\) With 'a' being the rise, 'b' being the run, and 'c' being the edge you're looking for. So the \(\sqrt{c^2}\) will give you that length.

Answer 3

I thought there was some different, crazy, complicated way of doing it since it was using the distance formula..

Answer 4

It worked! Thank you, Sir.

Answer 5

You're very welcome. :)