Write Euler's Formula and verify it for the hexagonal prism.

A class of $24$ students was asked to name their preferred soft drinks. The results are recorded in the tables. Draw a pie graph of this table.

Two brothers, Samir and Siraj, take turns mowing a rectangular lawn that is $60 \mathrm{m}$ long and $40 \mathrm{m}$ wide. If the area of the lawn is $k {\mathrm{m}}^2$, find $k$.

Two brothers, Samir and Siraj, take turns mowing a rectangular lawn that is $60 \mathrm{m}$ long and $40 \mathrm{m}$ wide. When Samir cuts the grass, he does it in one hour using an old lawn mower. If he cut $k {\mathrm{m}}^2$ of grass of the lawn in one minute, find $k$.

Two brothers, Samir and Siraj, take turns mowing a rectangular lawn that is $60 \mathrm{m}$ long and $40 \mathrm{m}$ wide. Siraj uses a newer lawn mower and it takes him $40$ minutes to mow the lawn. If the number of square meters of lawn does he mow in one minute is $k$, find $k$.