m2 help

[-=HaZ=-]

I have been given the job to work out the m2 of a room which is practically a triangle

I wondered if anyone can work out what the m2 of a triangle with sides
2.4m X 2.1m X 2.1m

 

[Old Mod]

Multiply the two sides by each other as normal (not the diagonal) and half it.

 

[Ian]

As Marc says, 2.4x2.1=5.04 divide by 2 = 2.52 m2.

 

[AliGage]

Damn Bri you beat me to it. I was waiting to see what my 7 year old said.

 

[Old Mod]

Damn Bri you beat me to it. I was waiting to see what my 7 year old said.

Hahahaha!

 

[Ian]

Lol!

 

[Dougs Third Go]

I was waiting for Pythagoras again :lol:

 

[One Day]

Oh dear :mad2:

 

[Stef]

Well I'm glad Bri wrote that down as I've never been able to work out the m2 of a triangle.

 

[Time's Ran Out]

As the sizes given are for an isosceles triangle with 2 equal sizes it has a different formula than those calculations above which refer to a right angled triangle! However in this instance as the sizes of the sides are not that far removed from each other the answer is the same - 2.52 m2.
and for those that may not know Pythagoras is just for the right angle and not area!

 

[radim]

:yikes:

 

[IHB]

I make it about 2.07m2



Think of it as 2 right angle triangles. You can get the height (approx 1.72) based on the 1.2 and 2.1. Then the area is 1.72 x 1.2 = 2.07. What's my prize?

 

[Diggy]

IHB ,Go to the top of the class , but dont take your books as you wont be there for long . As my old man usedto say.

Diggy.

 

[Martyn Leeds]

Anyone else stuck on there GCSE homework..

 

[radim]

IHB is right. just over 2 metres sq.