The area of an isosceles trapezoid is $77$ square inches, the height measures $4$ inches and the legs are $5$ inches long. Find the lengths of the bases.

The area of a trapezium is $165 {\mathrm{cm}}^2$ and its height is $10 \mathrm{cm}$. If one of the parallel sides is double the other, Find the two parallel sides.

Find the area of the rhombus in ${\mathrm{m}}^2$, length of whose diagonals are given here.

Find the area of the rhombus in ${\mathrm{m}}^2$, length of whose diagonals are given here.

Find the area of the quadrilateral $ABCD$ (in ${\mathrm{cm}}^2$), in which $AC=36 \mathrm{cm}. BL$ and $DM$ are perpendiculars from $B$ and $D$ to $AC$ whose length is $16 \mathrm{cm}$ and $18 \mathrm{cm}$, respectively. 

Pratima made a $△ABC$ in which base $AC=10 \mathrm{cm}$ and altitude is $3 \mathrm{cm}$ and $△DEF$ in which $DE=10 \mathrm{cm}$ and altitude $=6 \mathrm{cm}$. Then she joined the triangles such that $A$ coincides with $D$ and $C$ coincides with $E$. Find the area of the quadrilateral thus formed (in ${\mathrm{cm}}^2$).

Find the area of the following figure (in ${\mathrm{m}}^2$):

Find the area of the following figure (in ${\mathrm{m}}^2$):

Find the area of the following figure (in ${\mathrm{m}}^2$):