Find the perimeter of the following:

Pentagon with side $5.75 \mathrm{cm}$

Find the perimeter of the following:

Octagon with side $6.25 \mathrm{cm}$

A rectangular garden is $50 \mathrm{m}$ long and $35 \mathrm{m}$ wide. It has a square rose garden of side $4 \mathrm{m}$. It has some play area for children which is $16 \mathrm{m}$ long and $10 \mathrm{m}$ wide. In the remaining area lawn is grown. Calculate the play area

A rectangular garden is $50 \mathrm{m}$ long and $35 \mathrm{m}$ wide. It has a square rose garden of side $4 \mathrm{m}$. It has some play area for children which is $16 \mathrm{m}$ long and $10 \mathrm{m}$ wide. In the remaining area lawn is grown. Calculate the area covered by lawn

A rectangular garden is $50 \mathrm{m}$ long and $35 \mathrm{m}$ wide. It has a square rose garden of side $4 \mathrm{m}$. It has some play area for children which is $16 \mathrm{m}$ long and $10 \mathrm{m}$ wide. In the remaining area lawn is grown. Calculate cost of putting a fence around the garden at $₹12 \mathrm{per} \mathrm{m}$.