In a building there are $24$ cylindrical pillars. The radius of each pillar is $28 \mathrm{cm}$ and height is $4 \mathrm{m}$. Find the total cost of painting the curved surface area of all pillars at the rate of $₹8$ per metre square

Find the volume and the total surface area of a cuboid, whose length is $15 \mathrm{cm}$, breadth is $10 \mathrm{cm}$ and height is $8 \mathrm{cm}$.

Find the volume and the total surface area of a cuboid, whose length is $3.5 \mathrm{m}$, breadth is $2.6 \mathrm{m}$ and height is $90 \mathrm{cm}$.

The volume of a cuboid is $7.68 {\mathrm{m}}^3$. If its length is $3.2 \mathrm{m}$ and height is $1 \mathrm{m}$, find its breadth.

Find the volume and total surface area of a cube whose each edge is $8 \mathrm{cm}$.