A rectangular garden $10 \mathrm{m}\text{ by} 16 \mathrm{m}$ is to be surrounded by a concrete walk of uniform width. Given that the area of the walk is $120$square metres, assuming the width of the walk to be $x$, form an equation in $x$ and solve it to find the value of $x$.

Find the perimeter and area of the figure given below in which all corners are right angles.

Find the perimeter and area of the figure given below in which all corners are right angles.

Find the area and perimeter of the figure given below in which all corners are right angles and all measurement in centimetres.