help please i need help realy fast I just need someone to check my answers and if they're wrong please tell me what it is

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie