The area of a right-angled triangle with base $6\,m$ and hypotenuse $6.5\,m$ is........$m^2$

One side of the parallelogram is $14\, cm$. Its distance from the opposite side is $16\, cm$. The area of the parallelogram is........$cm^2$.

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

$A$ figure consists of a square of side '$a$' $m$ with semi-circles drawn on the outside of the square. The area (in $m^{2}$) of the figure so formed will be

The base of a triangular field is three times its altitude. If the cost of cultivating the field at $50$ per hectare is $Rs. 675$,then what are its base and height?

Find the perimeter of a circular plot which occupies an area of $154 \, m^{2}$ (in $m$).