The figure is made up of two identical triangles. Find the area and the perimeter of the figure.

In a triangle $\mathrm{ABC}$, points $\mathrm{J}$ and $\mathrm{K}$, on the sides $\mathrm{AB}$ and $\mathrm{BC}$ respectively, are such that $\mathrm{CJ}$ is perpendicular to $\mathrm{AB}$, and $\mathrm{AK}$ is perpendicular to $\mathrm{BC}$. What is the length of $\mathrm{AK}$ (in $\mathrm{cm}$)?

Find the area of a circular coaster of diameter $6 \mathrm{cm}$. Write the answer in terms of $\mathrm{\pi }$.

Find the area of the circle (in ${\mathrm{cm}}^2$). $\left(\mathrm{Take} \mathrm{\pi }=\frac{22}{7}\right)$

Find the area of the circle (in ${\mathrm{m}}^2$). $\left(\mathrm{Take} \mathrm{\pi }=\frac{22}{7}\right)$

Find the area of the circle (in ${\mathrm{cm}}^2$). $\left(\mathrm{Take} \mathrm{\pi }=3.14\right)$

Find the area of the circle (in ${\mathrm{cm}}^2$). $\left(\mathrm{Take} \mathrm{\pi }=3.14\right)$

Find the area of the circle (in ${\mathrm{cm}}^2$). $\left(\mathrm{Take} \mathrm{\pi }=3.14\right)$

Find the area of the circle (in ${\mathrm{cm}}^2$). $\left(\mathrm{Take} \mathrm{\pi }=3.14\right)$