Rupesh Pathak and Vaishali Bhatia Solutions for Chapter: Perimeter and Area of Plane Figure, Exercise 6: Exercise 11.4

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 length of diagonal $AC$ in the adjoining figure if the area of quadrilateral $ABCD$ is $35 {\mathrm{cm}}^2$.

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 ${\mathrm{m}}^2$):

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

Find the area of the following field (in ${\mathrm{m}}^2$). All dimensions are in meters.

Find the area of the following field (in ${\mathrm{m}}^2$). All dimensions are in meters.