Finding the length of the missing base in a trapezoid.

[Xx_DoRiToS_xX]

I think this is geometry so..yeah. I honestly don't know how to do this and I can't really understand what to do..If y'all can answer this right now, I would be very greatful but I understand everyone is probably busy so here's the question.

 

[Deleted member 4993]

I think this is geometry so..yeah. I honestly don't know how to do this and I can't really understand what to do..If y'all can answer this right now, I would be very greatful but I understand everyone is probably busy so here's the question.
View attachment 25338

What is the equation for:

Area of a trapezoid ?

 

[jalexandre]

It looks like you're given the height, base1, and the area. You just need to find base 2. Do you know the formula for the area of a trapezoid? It would help to know whether you're having trouble setting the problem up, or solving the equation for the base.