How many tiles,each $4 \, dm$ square,will be required to cover the floor of a room $8 \, m$ long and $6 \, m$ broad?

If the ratio of areas of two squares is $225: 256,$ then the ratio of their perimeters is

$A$ $2 \text{ m}$ broad pathway is to be constructed around a rectangular plot on the inside. The area of the plot is $96 \text{ m}^2$. The rate of construction is $₹ 50 / \text{ m}^2$. Find the total cost of construction (in $₹$).

$A$ square is inscribed in a circle whose radius is $4\, cm$. The area of the portion between the circle and the square is

What is the area of the shaded portion if each side of the square measures $21\,cm$? (in $cm^2$)

The dimensions of the floor of a rectangular hall are $4\, m \times 3\, m$. The floor of the hall is to be tiled fully with $8\, cm \times 6\, cm$ rectangular tiles without breaking the tiles into smaller sizes. The number of tiles required is: