Question

construct a triangle abc in which bc = 8cm, angle b =45 ° and ab-ac = 3.5cm

Answer 1

Step1:First draw bc=8cm
Step2:Taking b as point using compass/protecter draw 45degree angle and name it A.
Step3:Now cut ab=3.5cm on the line Ab and that's your ab
Step4:Join ac.
Now your given triangle is complete..

Answer 2

See the attach file for ur ans
Figure is rough u can construct by written construction