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anonymous
 one year ago
how do I find the missing lengths to a trapezoid?
anonymous
 one year ago
how do I find the missing lengths to a trapezoid?

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UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1do you have the other sides and the area or perimeter?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i have the two bases

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i am trying to figure out how to find the height specifically

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1can you sketch it? dw:1438139990906:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438140016611:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438140115245:dw

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1The formula for the area of a trapezium is: \[A = \left(\frac{a+b}2\right)\times h\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but how do i find the height?

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1you have a value for the area \(A\), and you have the lengths of the bases \(a\), \(b\) solve for the height \(h\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438140350883:dw

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1rearranging \[A = \left(\frac{a+b}2\right)\times h\\\qquad\Downarrow\\A\times\left(\frac{2}{a+b}\right)=h\]

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1yeah, you can substitute the values in before rearranging, if you want to

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438140646616:dw

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1dw:1438140814219:dw