If the area of the crossroads at right angles to each other through the centre of the field is $k m^2$. Find the value of $k$.

The area of the shaded portion is $k m^2$ then find the value of $k$ if all corners are right-angled.

A floor which measures $15 \mathrm{m}\times 8 \mathrm{m}$ is to be laid with tiles measuring $50 \mathrm{c}\mathrm{m}$ by $25 \mathrm{c}\mathrm{m}$. Find the number of tiles required. Further, if a carpet is laid on the floor so that a space of $1 \mathrm{m}$ exists between its edges and the edges of the floor, what fraction of the floor is uncovered?

A book contains $360$ pages which measure $20 \mathrm{c}\mathrm{m}$ by $14 \mathrm{c}\mathrm{m}$. Every page has a blank margin $2.5 \mathrm{c}\mathrm{m}$ deep along each short side and $2 \mathrm{c}\mathrm{m}$ deep each long side. If the total area available for printing is $k c{m}^2$, then find the value of $k$.

A garden is $24 \mathrm{m}$ long and $14 \mathrm{m}$ wide. There is a path $1 \mathrm{m}$ wide outside the garden along its sides. If the path is to be constructed with square marble tiles $20 \mathrm{c}\mathrm{m}\times 20 \mathrm{c}\mathrm{m}$, find the number of tiles required to cover the path.

A typist uses a sheet measuring $20 \mathrm{c}\mathrm{m}$ by $30 \mathrm{c}\mathrm{m}$ length wise. If a margin of $2 \mathrm{c}\mathrm{m}$ is left on each side and a $3 \mathrm{c}\mathrm{m}$ margin on top and bottom, then the percent of page used for typing is

The area of parallelogram is $k c{m}^2$, then find the value of $k$.

Find the area of parallelogram.

If the area of parallelogram is $A {\mathrm{m}}^2$ for the following values then find $A$.