anonymous
  • anonymous
A students desk at home is rectangular in shape and measures 3 feet wide by 5 feet long. Find the perimeter of the desk in centimeters. Then convert the answer to decimeters. Please help :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
3 ft X 5 ft; so 3(2) + 5(2) = 6 + 10 = 16ft^2. So there are 12 in. in a foot, so that's 192in. There are 2.54 centimeters in an inch, so then you can say that there are 487.68 centimeters in 192 inches. Then to decimeters; 10 are in 1 centimeter, so that gives you 4876.8 decimeters, right? :)
anonymous
  • anonymous
WAIt sorry no no no no there are 0.1 decimeters in a centimeter, SORRY. Its 487.68 * 0.1 = 48.768dm I think
anonymous
  • anonymous
I know the answer is 141.4 yards.....but I'm lost on how to figure it out.

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radar
  • radar
The problem it wants the answer in centimeters, then that converted to decimeters. Where do the 141.4 yds figure?
radar
  • radar
I suspect you are looking at an answer for a different question.
anonymous
  • anonymous
okay so sorry 16 foot
radar
  • radar
O.K yes the perimeter is 16 foot, but that is an intermediate step, now you must convert feet to centimeters.
radar
  • radar
I know 4 feet = 121.92, so 16 ft = 4 times 121.92=487.68 cm
anonymous
  • anonymous
how is the 16 feet figured?
radar
  • radar
1 cm = .1 dm, so 487.68 (.1)= 48.768
radar
  • radar
Perimeter is the sum of the sides of the desk, 5+5+3+3=16 ft.
anonymous
  • anonymous
yay! I understand thanks so much.....
radar
  • radar
Great. Good luck.

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