Kannan divides a circular disc of radius $14 \mathrm{cm}$ into four equal parts. What is the perimeter of a quadrant-shaped disc? (use $\mathrm{\pi }=\frac{22}{7}$)

Find the area of the circle of radius $21 \mathrm{cm}$ (Use $\mathrm{\pi }=3.14$ ).

Find the area of a hula loop whose diameter is $28 \mathrm{cm}$ (use $\pi =\frac{22}{7}$ ).

A garden is made up of a rectangular portion and two semicircular regions on either sides. If the length and width of the rectangular portion are $16 m$ and $8 m$ respectively, calculate the perimeter of the garden $(\mathrm{\pi }=3.14)$.

A garden is made up of a rectangular portion and two semicircular regions on either sides. If the length and width of the rectangular portion are $16 m$ and $8 m$ respectively, calculate the total area of the garden. $(\mathrm{\pi }=3.14)$