√(3.5÷2)²+(3.25)² =?.............plz give me an easy way of solving this root

Dear Student ,
Please find below the solution to the asked query :

3.522+3.252=35202+3251002=742+1342=4916+16916=49+16916=2184=14.764=3.69 .
 
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first multiply (3.25/2) by 2/2
we get 7/4, then multiply 3.25 by 4/4 , we get 13/4.
=> we know how to answer,
(7/4)2 + (13/4)2 ] = [√218] / 4. 
 
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