Question

What is the perimeter of the trapezoid? Round to the nearest tenth of a unit.













A.

28.3 units








B.

26.1 units








C.

25.1 units








D.

7.3 units

Answer 1

http://static.k12.com/calms_media/media/1578500_1579000/1578510/1/a662ac0e78300731ceb0f4c5a8bab9e6587468e6/MS_IMC-150122-1305014.jpg

Answer 2

@Michele_Laino @iGreen @Ineedhelpfast12 @amistre64

Answer 3

what is a perimeter?

Answer 4

LxWxH

Answer 5

no, thats volume ....

Answer 6

im not sure

Answer 7

you have these things defined in your course material, you need to find the definition of perimeter for me

Answer 8

hint:
you have to count the number of little squares along each side
furthermor, in order to know the length of the slanted side you have to appli the Pitagora's Theorem to the right triangle CHB

Answer 9

we cant find a solution if we dont know what we are looking for after all

Answer 10

furthermore*

Answer 11

its a boundary of a closed shape

Answer 12

good, so we need to find out how to measure the length of the boundary. 3 sides should be simple enough to find, its the 4th that might cause some issue

Answer 13

what can you tell me about the length of the perimeter?

Answer 14

ohhh do u just count the units all around

Answer 15

yes, but one side is not going to give a good unit count, the other 3 we have no problem with

Answer 16

18

Answer 17

18 measures the straight sides, thats good

now a mechanical way to measure the slanted side is to transfer its length to the side of a piece of paper, and compare to the longest side.

Answer 18

otherwise you would want to use eaither special triangles, or the pythag thrm

Answer 19

ok... I got C

Answer 20

yep