The area of a rectangular sheet is $500 \mathrm{c}{\mathrm{m}}^2$. If the length of the sheet is $25 \mathrm{c}\mathrm{m}$, what is its width? Also, find the perimeter of the rectangular sheet.

Anu wants to fence the garden in front of her house on three sides with lengths $20 \mathrm{m}, 12 \mathrm{m}$ and $12 \mathrm{m}$. Find the cost of fencing at the rate of $₹ 150$ per metre.

One of the sides and the corresponding height of a parallelogram are $4 \mathrm{cm}$ and $3 \mathrm{cm}$ respectively. Find the area of the parallelogram.

The two sides of the parallelogram $ABCD$ are $6 \mathrm{cm}$ and $4 \mathrm{cm}$. The height corresponding to the base $CD$ is $3 \mathrm{cm}$. Find the area of the parallelogram.

The two sides of the parallelogram $ABCD$ are $6 \mathrm{cm}$ and $4 \mathrm{cm}$. The height corresponding to the base $CD$ is $3 \mathrm{cm}$. Find the height corresponding to the base $AD$.

Find the area of the following triangle.