A $16 \mathrm{m}$ by $18 \mathrm{m}$ rectangular section of a wall is to be covered by square tiles that measure $2 \mathrm{m}$ on each side. If the tiles are not cut, how many tiles will be needed to cover the section of the wall?

If the ratio of areas of two circles is $225:256$, then the ratio of their circumference is

The perimeter of a square is $48 \mathrm{c}\mathrm{m}$. The area of a triangle is $4 \mathrm{c}{\mathrm{m}}^2$ less than the area of the square. If the base of a triangle is $14 \mathrm{c}\mathrm{m}$, then its height is

A square park has a $3$ $\mathrm{metre}$ wide road inside it running along its sides. The area occupied by the road is $1764$ $\mathrm{square} \mathrm{metres}$. What is the perimeter along the outer edge of the road?

A rectangular field has dimensions $30 \mathrm{m}$ by $12 \mathrm{m}$. Two mutually perpendicular passages of $4 \mathrm{m}$ width have been left in its central part and the grass has been grown in the rest of the field. What is the value of $k$ if the area under the grass is $k {\mathrm{m}}^2$?

A triangle and a parallelogram are constructed on the same base such that their areas are equal. If the altitude of the parallelogram is $80 \mathrm{m}$, what is the height of the triangle?

What is the numerical value of the diameter of a circle, if its circumference and area are numerically equal?

The figure given below is made up of a triangle and a quadrant. Its perimeter is $18\frac{2}{7}\mathrm{c}\mathrm{m}$. Find the length of $\mathrm{A}\mathrm{B}$     $\left(\mathrm{Take}\pi =\frac{22}{7}\right)$

Find the perimeter and area of a square of side $11 \mathrm{c}\mathrm{m}$.