Area of Planar Regions

Total surface area of the following closed figure is _____ ${\mathrm{units}}^2$.

The measure of the planar region is called its _____.

If $1 \mathrm{cm}$ represents $5 \mathrm{m},$ what area does $6 {\mathrm{cm}}^2$ represent in ${\mathrm{m}}^2$?

If the unit of length is $\mathrm{m}$, then the unit of area will be

The units of area of a rhombus whose diagonals are $4 \mathrm{cm}$ and $6 \mathrm{cm}$ is $12 \mathrm{cm}$.

An example of a planar region.

In the adjoining figure, a planar region formed by a figure $Z$ is made of two non-overlapping planar regions $A$ and $B$, then Area of figure $Z=$Area of figure $A$$+$Area of figure _____

In the adjoining figure, the three planar regions are $ABD, BDC$ and $ADC$.

What is the area of the $2$ right triangles D and E?

The area of the figure formed by joining the midpoints of the adjacent sides of a rhombus with diagonals $16 \mathrm{cm} \mathrm{and} 12 \mathrm{cm}$ is

$ABCD$ is a trapezium with parallel sides $AB=a$ and $DC=b$. If $E$ and $F$ are midpoints of non-parallel sides $AD$ and $BC$ respectively, then the ratio of areas of quadrilaterals $ABFE$ and$EFCD$is

Rajni says $1 \mathrm{sq}.\mathrm{m}={100}^2 \mathrm{sq}.\mathrm{cm}$. Do you agree? Explain.