If the area of a square is equal to the area of a rectangle $6.4 \, m$ long and $2.5 \, m$ wide,then each side of the square measures (in $m$)

The area of the incircle of an equilateral triangle of side $42 \ cm$ is (in $cm^2$)

If the perimeter of a semi-circular protractor is $36 \, cm$,then its diameter is ...... $cm$?

$A$ wire which when bent in the form of a square encloses an area of $484 \, cm^2$. What will be the enclosed area when the same wire is bent into the form of a circle? (in $cm^2$)

$A$ vessel is in the form of a hollow cylinder mounted on a hemispherical bowl. The diameter of the hemisphere is $14 \, cm$ and the total height of the vessel is $13 \, cm$. Find the capacity of the vessel in $cm^3$. (Take $\pi = 22/7$)

If the diagonal of a square is doubled to make another square,the area of the new square will