Math Is Fun Forum
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#1 2010-12-02 00:56:29
- JMUnoz
- Member
- Registered: 2010-12-02
- Posts: 1
Geometry
Find the perimerer and are of a right triangle if the shortest side is 16 in. and the longest side is 34 in. Include correct units with each part of the solution
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#2 2010-12-02 01:47:04
- 123ronnie321
- Member
- Registered: 2010-09-28
- Posts: 128
Re: Geometry
The longest side will be the hypotenuse.
Use the Pythagoras theorem to find the other side.....
This link will help you understand the basics of a triangle.
http://www.mathsisfun.com/triangle.html
Last edited by 123ronnie321 (2010-12-02 01:59:57)
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#3 2010-12-02 02:33:02
- liuv
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- Registered: 2006-05-14
- Posts: 29
Re: Geometry
let a=16,c=34
b = √(c*c-a*a) = 30
perimeter = a + b + c = 80
I'm from Beijing China.
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#4 2010-12-02 08:59:09
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Geometry
Hi JMUnoz;
Using the pythagorean theorem.
You get b = 30. The perimeter ia 16 + 30 + 34 = 80 inches
The area is:
Welcome to the forum!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#5 2010-12-05 10:08:46
- lilyflower11
- Member
- Registered: 2010-10-27
- Posts: 4
Re: Geometry
how do you solve for a leg on a right triangle using the pythagorean theorem when a=20, b=?, and c=25?
how do you solve for b? help!!!
Last edited by lilyflower11 (2010-12-05 10:09:54)
Math is hard, but fun! By the way, I'm trying to study for a Hunter's High School entrance exam on January 7th. I'm in 6th grade.
P.S. 6th grade is tiring! 
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#6 2010-12-05 10:32:15
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,624
Re: Geometry
hi lilyflower11
To calculate the longest side you would square the sides, add then square root.
To calculate a shorter side, square the sides, subtract and then square root.
So b = sqrt (625 - 400) = 15
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
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#7 2010-12-19 06:36:51
- lilyflower11
- Member
- Registered: 2010-10-27
- Posts: 4
Re: Geometry
thanks, bob bundy!
Math is hard, but fun! By the way, I'm trying to study for a Hunter's High School entrance exam on January 7th. I'm in 6th grade.
P.S. 6th grade is tiring!
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#8 2010-12-19 09:00:00
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,624
Re: Geometry
You're welcome.
Good luck with the exam.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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