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# What Math Formula To Use.

Discussion in 'The Okie Corral' started by Goldendog Redux, Jun 21, 2012.

1. ### Goldendog ReduxShut your mouth

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What formula do I use to calculate dimensions in an isosceles trapezoid? Basically I want to be able to calculate the base length when I know the top length, angle/degree of sides and height of sides.

So if the top is 16 1/2 ", the height is 23 1/4" and the degree of slope is 10* or 100* depending on how you look at it, what will the base dimension be?

I am building plyo boxes and if I have the formula I should be able to vary the height of each box if I know the dimension and the the angle is constant.

Yes, I could build right angle boxes but I don't want to.

Sorry I am clearly not a math person and I hope I explained it well.

Thanks

MF

Last edited: Jun 21, 2012
2. ### DoubleWide

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Since it's symmetrical, just think of it as a square with 2 right triangles.

3. ### Bushflyrʇno uıƃuɐɥ ʇsnɾMillennium Member

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24.7".

tan 80 = 23.25/b

2b + 16.5 = the base

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