Question

see question no 15 and answer

Answer 1

side of square =side of triangle =6cm
perimeter : 6+6+6+6+6+6=36 cm
hope this helps you

Answer 2

if side of square BCEF is 6 cm

and triangle is equilateral,then value of each side of triangle is also 6 cm

so value of perimeter is
AB + BC + CD + DE + EF + FA = 6 + 6 + 6 + 6 + 6 + 6
                                                   = 36 cm


i hope it will help you
regards