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anonymous

  • 5 years ago

Find the perimeter and area of each parallelogram. Round to the nearest tenth. Help

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  1. jim_thompson5910
    • 5 years ago
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    Where is the parallelogram?

  2. anonymous
    • 5 years ago
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    |dw:1327364287076:dw|

  3. jim_thompson5910
    • 5 years ago
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    does it say anything about it being a rhombus?

  4. anonymous
    • 5 years ago
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    No

  5. jim_thompson5910
    • 5 years ago
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    you made a mark in the lower right hand corner to denote a right angle, but you clearly have a 45 degree angle to the left of that, so which one is it?

  6. anonymous
    • 5 years ago
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    That's what the book picture is

  7. anonymous
    • 5 years ago
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    |dw:1327364747193:dw|

  8. anonymous
    • 5 years ago
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    i cant draw stright

  9. jim_thompson5910
    • 5 years ago
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    oh ok, one sec

  10. anonymous
    • 5 years ago
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    k

  11. jim_thompson5910
    • 5 years ago
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    the problem here is that this has to be a rhombus because if it wasn't then we'd be missing information (namely the base side that runs parallel to the ground), so double check to make sure that nothing is missing

  12. anonymous
    • 5 years ago
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    Number 10 hold on

  13. jim_thompson5910
    • 5 years ago
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    alright

  14. anonymous
    • 5 years ago
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  15. anonymous
    • 5 years ago
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    there

  16. jim_thompson5910
    • 5 years ago
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    oh i see now

  17. anonymous
    • 5 years ago
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    if u can do it Show Work plz

  18. jim_thompson5910
    • 5 years ago
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    are you familiar with trigonometry?

  19. anonymous
    • 5 years ago
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    Nope Only Alg and Geo

  20. jim_thompson5910
    • 5 years ago
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    We can cut that parallelogram in half along that dashed line to get those two triangles We can then find the base b through the formula b = x/sqrt(2) where x is the hypotenuse In this case, x = 4, so the base is b = 4/sqrt(2) = 2.828 So the perimeter is P = 2*4 + 2*2.828 P = 13.656 So the perimeter is roughly 13.656 meters And the area of one triangle is A = (bh)/2 A = (2.828*2.828)/2 A = 8/2 A = 4 which means that the area of the parallelogram is 2*4 = 8 square meters

  21. anonymous
    • 5 years ago
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    tanx a lot

  22. jim_thompson5910
    • 5 years ago
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    yw

  23. anonymous
    • 5 years ago
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    Damn homework

  24. jim_thompson5910
    • 5 years ago
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    lol

  25. jim_thompson5910
    • 5 years ago
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    hw will get annoying definitely

  26. anonymous
    • 5 years ago
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    Willing to help wit all? 9-19 20-28even

  27. jim_thompson5910
    • 5 years ago
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    i'm afraid i don't have enough time, which one is really bugging you

  28. anonymous
    • 5 years ago
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    idk lol how long do u have

  29. jim_thompson5910
    • 5 years ago
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    about 10 min or so

  30. anonymous
    • 5 years ago
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    ok can u do some if u can

  31. jim_thompson5910
    • 5 years ago
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    alright, which one do you want me to do?

  32. anonymous
    • 5 years ago
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    11

  33. anonymous
    • 5 years ago
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    srry if i seem a pain in the A$$

  34. jim_thompson5910
    • 5 years ago
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    No you're not a pain at all. # 11 This is a square. And the formula for the perimeter is P = 4s P = 4*5.4 P = 21.6 So the perimeter is 21.6 cm and the formula for the area is A = s^2 A = (5.4)^2 A= 5.4*5.4 A= 29.16 So the area of the square is 29.16 square cm

  35. anonymous
    • 5 years ago
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    12? if u have time

  36. jim_thompson5910
    • 5 years ago
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    Last one and then I have to go # 12 Perimeter: P = 2*15+2*10 P = 30+20 P = 50 So the perimeter is 50 inches Area: A = bc*sin(theta) A = 10*15*sin(45) A = 150*0.70710678 A = 106.066017 So the area is roughly 106.066017 square inches

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