The length of a room is $12\, m$,width $8\, m$,and height $6\, m$. How many boxes will it hold if each box occupies $1.5\, m^3$ of space?

The diagonal of a cubical box is $\sqrt{300} \text{ cm}$. Find out the surface area.

$A$ rectangular tin sheet is $12 \, cm$ long and $5 \, cm$ broad. It is rolled along its length to form a cylinder by making the opposite edges just touch each other. Then the volume of the cylinder is

$10$ identical solid spherical balls of radius $3 \text{ cm}$ are melted to form a single sphere. In this process,$20 \%$ of the solid is wasted. What is the radius (in $\text{cm}$) of the resulting sphere?

If each edge of a cube is increased by $50 \%$,the percentage increase in surface area is (in $\%$)

The volume of the largest right circular cone that can be cut out of a cube of edge $7 \, cm$ is.....$cm^3$