m2 help

[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.

 

[Ian]

Looks like I need to revisit my maths text books :lol: I was adding 20% for waste on my earlier answer :smilewinkgrin:

 

[IHB]

Looks like I need to revisit my maths text books :lol: I was adding 20% for waste on my earlier answer :smilewinkgrin:

Yes I forgot to allow for all the cuts.

 

[mache]

For the type of triangle shown IBH went about it the right way due to it not being a right angled triangle. The full method would be to calculate using Herons Formula expressed as.

where

is the semiperimeter, or half of the triangle's perimeter.

However it's alot easier to go here and put the three lengths you have into the boxes and press calculate :8:

http://www.mathopenref.com/heronsformula.html

 

[steve187]

my head hurts

 

[Dougs Third Go]

For the type of triangle shown IBH went about it the right way due to it not being a right angled triangle. The full method would be to calculate using Herons Formula expressed as.

where

is the semiperimeter, or half of the triangle's perimeter.

However it's alot easier to go here and put the three lengths you have into the boxes and press calculate :8:

http://www.mathopenref.com/heronsformula.html

I like that 🙂