The formula used to find the area of the rectangular path is

A path $1 \mathrm{m}$ broad is constructed around a rectangular ground of dimensions $120 \mathrm{m}$ and $90 \mathrm{m}$ respectively. If the area of the path is $k {\mathrm{m}}^2$, find the value of $k$

Four circles are drawn side by side in a line and enclosed by a rectangle as shown below.

The radius of each of the circles is $3 \mathrm{cm}$. If the area of the rectangle is $k {\mathrm{cm}}^2$, find the value of $k$.

Four circles are drawn side by side in a line and enclosed by a rectangle as shown below.

If the radius of each of the circles is $3 \mathrm{cm}$, and the area of each circle is $A c{m}^2$, then find the value of $A$. (Round off the final value upto two decimal places).

Four circles are drawn side by side in a line and enclosed by a rectangle as shown below.

If the radius of each of the circles is $3 \mathrm{cm}$ and the shaded area inside the rectangle is $A c{m}^2$ then find the value of $A$.