anonymous
  • anonymous
NEED HELP CUZ MY TEACHER IS A POOPHOLE
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
The area of a right triangle is 30mm squared. The height is 12mm. Find the perimetier
anonymous
  • anonymous
i no im probs stupid for asking dis shizzle
anonymous
  • anonymous
http://www.mathsteacher.com.au/year7/ch12_length/07_triangle/triangle.htm look at this then i'll help you out just help you get an understanding

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anonymous
  • anonymous
I understand perimeter but i just don't get the concept of finding the perimeter with the area and height
anonymous
  • anonymous
FFirst you have to find the length of the side
anonymous
  • anonymous
well a right triangel is 90 degrees
anonymous
  • anonymous
uggg idn thats y i am asking :(
anonymous
  • anonymous
you know the Pythagorean theory?
anonymous
  • anonymous
yupper leg squard +leg squared= hypothenus squared
anonymous
  • anonymous
Pythagorean Theorem In any right triangle, the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares whose sides are the two legs. Translated meaning is the long side squared equals the sum of the two other sides squared. use that to find the length of the side
anonymous
  • anonymous
i understand that so would you do 30 squared + 12 mm= Hyp
anonymous
  • anonymous
yes
anonymous
  • anonymous
but i dont understand cuz 30 is the area so its not a leg
anonymous
  • anonymous
c^2=a^2+b^2
anonymous
  • anonymous
but 30 sqaured is the area not the leg....
anonymous
  • anonymous
\[\sqrt{30^2 + 12^2 =32.31099}\]
anonymous
  • anonymous
now that you have all the sides of the triangle (30,12,32.31099) use this formula (a+b+c= the perimeter
anonymous
  • anonymous
I NOOO but isn't 30 the area! sorry i am sassy
anonymous
  • anonymous
what i thought you wanted to find the perimeter not the area?
anonymous
  • anonymous
The area of a right triangle is 30mm squared. The height is 12mm. Find the perimetier
anonymous
  • anonymous
|dw:1366578785590:dw|
anonymous
  • anonymous
i am saying that 30 is the area not a leg of a right triangle
anonymous
  • anonymous
ohhhh well then
anonymous
  • anonymous
The area of a right triangle is 30mm squared. The height is 12mm. Find the perimetier
anonymous
  • anonymous
you need to find the length of sides
anonymous
  • anonymous
hold on one sec see if I can find someone to help us figure this out
anonymous
  • anonymous
@yrelhan4
yrelhan4
  • yrelhan4
You know the area. 1/2*b*h.. you know the height.. find the base.. once you know the base and height.. find the hypotenuse using pyth theorem.. And base, height, hyp.. that gives you the perimeter.
yrelhan4
  • yrelhan4
Yeah?
anonymous
  • anonymous
hey you still there toni??
yrelhan4
  • yrelhan4
Add*
anonymous
  • anonymous
@bostonblue
anonymous
  • anonymous
oo woopshow do u find the base
anonymous
  • anonymous
@yrelhan4
anonymous
  • anonymous
All you have to do is multiply the area by 2 and divide it by the height of the triangle. This should give you the base.

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