Question

IN TRIANGLE ABC BC=8CM,B=45 DEGREE AB-AC=3.5CM.CONSTRUCT

Answer 1

see diagram.

1.  Draw BC = 8 cm horizontally. 
2.  Draw a line at 45 degrees to BC at B.  Draw a long line.
3.  Measure 3.5 cm on this long line.  Mark the point as F.
4.  Now, draw a circular arc with F as a center and radius equal to FC.  This intersects the long inclined line at A.

   Join A and C to get the required ABC.

Answer 2

This is a answer of yours question.