Question

A rectangular sheet of paper is $12\frac{1}{2}cm$ long and $10\frac{2}{3}cm$ wide. Find the perimeter.

Answer 1

Let ABCD be a rectangular sheet whose length and width is given $12\frac{1}{2}cm$ and $10\frac{2}{3}cm$ respectively.

Then, We know that

The perimeter of a rectangle $=2$(length + width)

$=2(12\frac{1}{2}+10\frac{2}{3})$

$=2(\frac{25}{2}+\frac{32}{3})$

$=2\left(\frac{75+64}{6}\right)$

$=2\left(\frac{139}{6}\right)$

$=2\times \frac{139}{6}$

$=\frac{139}{3}cm$

Or

$=46\frac{1}{3}cm.$