Question

Please help it’s urgent

Answer 1

`\sf\\\textsf{We know,}\\\textsf{Perimeter of Pentagon = Sum of all its sides}\\or,\ 20=x+x+x+3.5x+3.5x\\or,\ 20=10x\\or,\ x=2m\\\therefore\ 3.5x=3.5*2=7m`