Question 427855
The paper is a rectangle
To find area, multiply the sides
{{{ A = 4.5 * 21 }}}
{{{ A = 94.5 }}} in2
To find the perimeter, add up the 4 sides
{{{P = 4.5 + 4.5 + 21 + 21 }}} in
{{{P = 51}}} in
Note that area is in square inches, and 
perimeter is in inches