Find the area of a triangle in which each side measures $8 \text{ cm}$ (in $\sqrt{3}$)? (in $\text{sq. cm.}$)

$A$ wire,when bent in the form of a square,encloses a region of area $121 \, cm^2$. If the same wire is bent into the form of a circle,then the area of the circle is ........ $cm^2$. (Use $\pi = \frac{22}{7}$)

If the length of a rectangle is increased by $10 \%$ and its breadth is decreased by $10 \%,$ then its area

If a regular hexagon is inscribed in a circle of radius $r,$ then its perimeter is........$r$.

The length of a rectangular plot is $20 \ m$ more than its breadth. If the cost of fencing the plot at $₹ 26.50/m$ is $₹ 5300$,what is the length of the plot in metres?

The perimeters of five squares are $24 \ cm$,$32 \ cm$,$40 \ cm$,$76 \ cm$,and $80 \ cm$ respectively. The perimeter of another square equal in area to the sum of the areas of these squares is $...... \ cm$.