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+--- Thread: Anybody that knows about surface area and area of trapezoids please help this desperate 9th grade student? (/thread-2916.html)
Anybody that knows about surface area and area of trapezoids please help this desperate 9th grade student? - TRish - 10-02-2012 04:10 AM
https://twitter.com/PashaEquestrian/status/238273204660080641/photo/1
Thats the problem, ugh i cannot figure it out please help!
- norcekri - 10-02-2012 04:18 AM
A trapezoid's are is height (called "width" in the diagram) times the median (midpoint base).
a = bh
The diagrammed trapezoid has two of the quantities given:
a = 22.5
h = 6
So ...
22.5 = b 6
b = 22.5 / 6 = 3.75
Now, using the properties of similar figures, if Vanessa's pool has a width of 24, what is the median base? The area of her pond is the product of the two.
I expect that you can finish from there.