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Find the length of the missing side of the trapezoid below.
Give your answer in simplified form.

 May 16, 2020
 #1
avatar+111456 
+2

Drop a perpendicular  from the top left edge of the figuer to the base

 

This forms a right  triangle with  a hypotenuse of 7  and a leg of (8 - 5) =  3

 

The missing side =  the other leg  =  sqrt [ 7^2 - 3^2 ]  =  sqrt [ 49 - 9 ]  =  sqrt (40)  =

 

sqrt  [ 4 * 10)  =   sqrt 4 * sqrt 10   =   2 sqrt 10

 

 

cool cool cool

 May 16, 2020

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