If the area of a square increases by $69 \%$,then the side of the square increases by (in $\%$)

What will be the area of a circle with circumference equal to $22 \, cm$? (in $sq \, cm$)

The length of a rectangular plot is thrice of its breadth. If the area of the rectangular plot is $7803 \ m^2$,what is the breadth of the rectangular plot? (in $m$)

The adjacent sides of a parallelogram are $8\, m$ and $5\, m$. The distance between the longer sides is $4\, m$. The distance between the shorter sides is......$m$.

In the figure,$DE \parallel BC$. If $DE = 3 \text{ cm}$,$BC = 6 \text{ cm}$,and the area of $\Delta ADE = 15 \text{ cm}^2$,then the area of $\Delta ABC$ is ............ $\text{cm}^2$.

Given that the volume of a metal sphere is $38808 \, cm^{3}$. Then,its radius and its surface area are?