The inner circumference of a circular track is $440 \, cm$. The track is $14 \, cm$ wide. Find the diameter of the outer circle of the track? (in $cm$)

If the radius of a circle is reduced by $40 \%$,then its circumference is reduced by (in $\%$).

What is the cost of flooring a rectangular hall?
Statements:
$I.$ The length of the rectangle is $6 \ m$.
$II.$ The breadth of the rectangle is $2/3$ of its length.
$III.$ The cost of flooring an area of $1 \ m^2$ is ₹ $4500$. (Note: Corrected unit/value for logical consistency).

Find the perimeter (in $cm$) of a semicircle of radius $28\, cm$.

$A$ square has an area of $200\, m^2$. $A$ new square is formed such that the length of its diagonal is $\sqrt{2}$ times the diagonal of the given square. What is the area of the new square in $m^2$?

In an equilateral triangle of side $24 \ cm$,a circle is inscribed touching its sides. The area of the remaining portion of the triangle is (in $cm^2$) $(\sqrt{3} = 1.732)$