A community for students.
Here's the question you clicked on:
 0 viewing
Dallasb22
 2 years ago
What is the area of a right triangle with
Side a: 5√2
Side b: 4√2?
Dallasb22
 2 years ago
What is the area of a right triangle with Side a: 5√2 Side b: 4√2?

This Question is Closed

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I got 10.. Formula to find right angle: A=1/2BH

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0find the side and then use use heros formula.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0So i use: 5√2^2+4√^2=C^2

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0by using pythagourus theorm

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.02sides are in radical then 3rd should be also in radical. do you know radical mean?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0So it would be 9√2^2?

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0\[18=\sqrt{3*3*2}\] \[18=\sqrt{9*2}\] u know the square roof of 9 is 3 then \[18=3\sqrt{2}\]

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0What is the Hero's formula?

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0therefor c=3redical2

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0do you know about Hero's formula ?

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1If it's a right triangle, you don't need Heron's formula . . .

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I don't know Heron's formula. And yes, it is a Right Triangle

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Multiply a×b then divide by 2.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Nice of you to join us, Cliff

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1*salutes* Heron's formula is general for any kind of triangle where you don't feel like using trigonometry to find the height. It requires that you know all three sides first, so often, you'll need trigonometry anyway.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.05√2 * 4√2= 40 40/2= 20

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0yes i am in that i am talking about Hero's formula not herons.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Okay, good to know, i googled Heron's formula. Hero formula=Heron's formula

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Same guy. Heron is another name for Hero of Alexandria (en.wikipedia.org/wiki/Hero_of_Alexandria)

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I also, noted down Heron's formula for later use :D So the area: 20?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I have another question if one of you don't mind

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0its ok bro. u r welcome.

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0bro look at here what is says http://www.mathsisfun.com/geometry/heronsformula.html

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Heron's formula is pretty cool, but I prefer using the Law of Sines and Law of Cosines better (provided you know at least 1 angle.

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0Step 2: Then calculate the Area using:

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0means we were dong right or wrong?

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0i was doing without angles.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Area of any triangle is half the product of the base and height. For a right triangle, the two perpendicular legs are the base and height.

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0its easy for @Dallasb22

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0ok lets see by using herons formula.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Actually, you were doing it with angles because you saw the right angle and used Pythagoras' theorem for the third side (which was unnecessary).

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Be my guest. Heron's formula is a beast and not worth my time.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Yes, receiving the third side is only necessary if we use Heron's formula.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1and if it wasn't a right angle, then you'd have to use law of cosines or law of sines to find the third side, and if you're going to use trig anyway, might as well solve for the height instead (which is easier) and you still don't need Heron's formula.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0@CliffSedge Another right triangle, A=2√3 c=4 What do i do here?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Ah true, Cause 1/2BH=Area

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I'd still only need base and height.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1If you now have a leg and the hypotenuse, use PT to find the other leg then same as before.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1As a fun exercise just to practice some arithmetic, you can use Heron's formula to verify the area, or viceverse.

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0what are the answers of 1st question?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Okay, so 2√3^2+b^2=4^2 6+B^2=16

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0@muhammad9t5 Answer for Q1 is 20

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0So i subtract 6 to both sides B^2=10

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1mm, something doesn't look right there..

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0They want my answer to be x√x

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1I think you forgot to square the 2 in (2√3)

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Ahhhh. Thats my PROBLEM!!!

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0So I would multiply A and B 2√3 * 2 =X x/2=Area?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Giving me an area of: 4√3

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1did you divide by 2?

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Math teaches us to be precise and methodical, yes?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I have 2 more if you don't mind.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0They should be easy, they are equilateral.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I just am doing something wrong that I can't find..

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1And remember, that is more important than any particular kind of math problem. It's the problemsolving attitude, the patience, the planning, that is more important than whether or not you can solve this or that equation.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Wanna take this equilateral triangle, muhammad? I'm going to take a coffee break.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Yes, i know what you mean. If you didn't catch me I would have gotten it wrong, because I was rushing.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0All three sides: 5, so the perimeter: 15 What is the area?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Equilateral triangle area formula: √3/4 * (s^2)

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1347039793370:dw

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0But i cannot insert that in my work, i can only enter x√x

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1hmm, I'm getting something different. I'm going to doublecheck my work. In the meantime, if you forget the equilateral triangle formula, you can rederive it using (what else?) Pythagoras' theorem. dw:1347039924563:dw

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0But what use is PT, if all side's are equal?

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1To solve for the height of the triangle, which you need for the general triangle area formula.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Okay.. So the height is 25? 25+25=25 50=25 25

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Wait.. I did that wrong.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1347040273270:dw

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0IF the sides are all 5, then AB is 2.5

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0So how do i put 2.5 into PT?

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1347040269678:dw \[(S/2)^2+h^2=S^2 \rightarrow h^2=S^2S^2/4 = 3S^2/4\]

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Half of 5 is (5/2). (5/2)^2 = 25/4. (tip: fractions are better than decimals when doing algebra)

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1I doublechecked. Your original formula and answer were correct.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.025√3/4 is the answer?

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Yep. If wherever you are submitting these answers doesn't like it in fraction form, then convert 25/4 into a decimal.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Yes. 2.5^2 = 6.25 just like 25^2 = 625.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0But wait.. Something is wrong, because they want my answer as: x√x

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1And 6.25√3 is no good?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Darn, there i go again I forgot we were only simplifying the 25/4

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I kept including the 25√3

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I included the radical in the the division...

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0So its 25/4√3 Or 6.25√3

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Your Score: 100.0% Thanks Cliff.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Those 2 were the only ones I was having trouble with.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1My pleasure. They're all just puzzles. Keep looking until you find where all the pieces fit.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.