The volume of a cube is $729 \, cm^3$. The total surface area of the cube is ........ $cm^2$.

The edge of an ice cube is $14 \, cm$. The volume of the largest cylindrical ice cube that can be formed out of it is.......$cm^3$

Two $cm$ of rain has fallen on a square $Km$ of land. Assuming that $50 \%$ of the raindrops could have been collected and contained in a pool having a $100 \, m \times 10 \, m$ base,by what level would the water level in the pool have increased?

If the volume of a sphere is numerically equal to its surface area,then its diameter is ......... $cm$.

$A$ brick measures $20 \, cm$ by $10 \, cm$ by $7.5 \, cm$. How many bricks will be required to construct a wall $25 \, m$ long,$2 \, m$ high,and $0.75 \, m$ thick?

If the diameter of a sphere is decreased by $25 \%$,its curved surface area will be decreased by (in $\%$).