If the area enclosed by the given shape is $k {\mathrm{cm}}^2$. Find the value of $k$.

 

Calculate the area enclosed by the given shapes. Let measurement be $k {\mathrm{cm}}^2$. Find value of $k$.

From the adjoining sketch, let the length $\mathrm{AD}$ be $k \mathrm{cm}$. Find the value of $k$.

From the adjoining sketch, let the area of trapezium $\mathrm{ABCD}$ be $k {\mathrm{cm}}^2$. Find the value of $k$.

From the adjoining sketch, let the area of triangle $\mathrm{BCD}$ be $k {\mathrm{cm}}^2$. Find the value of $k$.

Diagram of the adjacent picture frame has outer dimensions$=28 \mathrm{cm}\times 32 \mathrm{cm}$ and inner dimensions $20 \mathrm{cm}\times 24 \mathrm{cm}.$ Find the area of each section of the frame, if the width of each section is same.

In the adjoining quadrilateral $ABCD, \angle \mathrm{BAD}={90}^{\mathrm{o}}$ and $\angle \mathrm{BDC}={90}^{\mathrm{o}}.$ All measurements are in centimetres. Let the area of the quadrilateral $ABCD$ be $k {\mathrm{cm}}^2$. Find the value of $k$.

Top surface of a raised platform is in the shape of a regular octagon as shown in the given figure. Let the area of the octagonal surface be $k {\mathrm{cm}}^2$. Find the value of $k$.

There is a pentagonal shaped park as shown in the following figure: For finding its area Jaspreet and Rahul divided it in two different ways.

Find the area of this park using both ways. Can you suggest some other way of finding its area?