Geometry Area of a Parallelogram

Mathematics
Tutor: None Selected Time limit: 1 Day

I was able to calculate the area ( 7.5 * 4 = 30 ), but don't know how to solve for X. Please see the attached image/picture. Thanks.

Jul 23rd, 2015

Thank you for the opportunity to help you with your question!

where is the attached image?????

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 23rd, 2015
Jul 23rd, 2015
Jul 23rd, 2015
Jul 23rd, 2015
Jul 23rd, 2015
Jul 23rd, 2015

Area of parallelogram=b*h=7.5*4=30


AD=7.5,DC=5

let triangle containing x be AXD and other triangle be CYD

both are right angled triangles and vertical angles.

so they are similar.

therfore,

AX/CY=XD/YD=AD/DC 

x/4=7.5/4

x=7.5

Jul 23rd, 2015

sorry,

x/4=7.5/5

x=7.5*4/5

  =30/5

   =6

Jul 23rd, 2015

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Jul 23rd, 2015
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