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# Perimeter Question Watch

1. I'm currently stuck on this question:

If I want to find the perimeter, it'll be :
3x + 2 + x + 2 + 5x

But I'm not sure what the long slanted hyptonuse is. I know I'm meant to use pythagoras.

Would the slanted length be , 3x^2 + 4x^2 = c^2 ?

I got 3x lenght from the left , and 4x as 2+5x - 2+x to find the length of the triangle.
2. (Original post by Gelato)
I'm currently stuck on this question:

If I want to find the perimeter, it'll be :
3x + 2 + x + 2 + 5x

But I'm not sure what the long slanted hyptonuse is. I know I'm meant to use pythagoras.

Would the slanted length be , 3x^2 + 4x^2 = c^2 ?

I got 3x lenght from the left , and 4x as 2+5x - 2+x to find the length of the triangle.
Sort of... I mean, 3x^2 + 4x^2 = c^2 should actually be (3x)^2 + (4x)^2 = c^2. But this is an equation, and not a length; but the equation gives you the length (you need to solve for c, which is the length of the slanted edge).
3. (Original post by Gelato)
Would the slanted length be , 3x^2 + 4x^2 = c^2 ?
Yes. I'm assuming you're squaring each term but didn't include brackets. Find c.
4. (Original post by Gelato)
But I'm not sure what the long slanted hyptonuse is. I know I'm meant to use pythagoras.

Would the slanted length be , 3x^2 + 4x^2 = c^2 ?
.
The slanted length is c, but yeah you would use that equation to work it out

PS: Note that it's (3x)^2 not just 3x^2 - but you probably knew that already.

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