What is the perimeter of a square whose area is $144 {\mathrm{cm}}^2$ ?

Define tally mark with the help of an suitable example.

How long will it take a boy to go around a regular pentagon of side $17 \mathrm{m}$, at a speed of $5 \mathrm{m}$ per minute ?

Arrange the following decimals in descending order :
$3.35,2.59,28.1,6.0,6.7,3.5$

Solve the equation $5(3 \mathrm{x}+4)-8(6 \mathrm{x}-7)=9 \mathrm{x}-8$.

Total number of animals in five villages are as follows:

Village A :$80$  Village B :$120$

Village C :$90$  Village D :$40$

Village E :$60$

Prepare a pictograph of these animal using one symbol $\otimes$ to represent $10$ animals and answer the following question:

How many symbols represent animal of village E?

Total number of animals in five villages are as follows:

Village $\mathrm{A}:80$          Village $\mathrm{B}:120$

Village $\mathrm{C}:90$          Village $\mathrm{D}:40$

Village $\mathrm{E}:60$

Prepare a pictograph of these animals using one symbol $\otimes$ to represent $10$ animals. Which village has the maximum number of animals?